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Conserved domains on  [gi|446808193|ref|WP_000885449|]
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MULTISPECIES: LysR family transcriptional regulator [Enterobacteriaceae]

Protein Classification

PRK09791 family protein( domain architecture ID 11484482)

PRK09791 family protein

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
PRK09791 PRK09791
LysR family transcriptional regulator;
1-302 0e+00

LysR family transcriptional regulator;


:

Pssm-ID: 182077 [Multi-domain]  Cd Length: 302  Bit Score: 567.85  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   1 MAFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELR 80
Cdd:PRK09791   1 MAFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALTKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELR 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  81 AAQEDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHE 160
Cdd:PRK09791  81 AAQEDIRQRQGQLAGQINIGMGASIARSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHE 160
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 161 FTFEKLLEKQFAIFCRPGHPAIGARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDF 240
Cdd:PRK09791 161 FTFEKLLEKQFAVFCRPGHPAIGARSLKQLLDYSWTMPTPHGSYYKQLSELLDDQAQTPQVGVVCETFSACISLVAKSDF 240
                        250       260       270       280       290       300
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 446808193 241 LSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECGYLQS 302
Cdd:PRK09791 241 LSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDTRQTPLTASLITLFRRECGYLQS 302
 
Name Accession Description Interval E-value
PRK09791 PRK09791
LysR family transcriptional regulator;
1-302 0e+00

LysR family transcriptional regulator;


Pssm-ID: 182077 [Multi-domain]  Cd Length: 302  Bit Score: 567.85  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   1 MAFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELR 80
Cdd:PRK09791   1 MAFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALTKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELR 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  81 AAQEDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHE 160
Cdd:PRK09791  81 AAQEDIRQRQGQLAGQINIGMGASIARSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHE 160
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 161 FTFEKLLEKQFAIFCRPGHPAIGARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDF 240
Cdd:PRK09791 161 FTFEKLLEKQFAVFCRPGHPAIGARSLKQLLDYSWTMPTPHGSYYKQLSELLDDQAQTPQVGVVCETFSACISLVAKSDF 240
                        250       260       270       280       290       300
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 446808193 241 LSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECGYLQS 302
Cdd:PRK09791 241 LSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDTRQTPLTASLITLFRRECGYLQS 302
PBP2_TdcA cd08418
The C-terminal substrate binding domain of LysR-type transcriptional regulator TdcA, which is ...
96-296 8.66e-110

The C-terminal substrate binding domain of LysR-type transcriptional regulator TdcA, which is involved in the degradation of L-serine and L-threonine, contains the type 2 periplasmic binding fold; TdcA, a member of the LysR family, activates the expression of the anaerobically-regulated tdcABCDEFG operon which is involved in the degradation of L-serine and L-threonine to acetate and propionate, respectively. The tdc operon is comprised of one regulatory gene tdcA and six structural genes, tdcB to tdcG. The expression of the tdc operon is affected by several transcription factors including the cAMP receptor protein (CRP), integration host factor (IHF), histone-like protein (HU), and the operon specific regulators TdcA and TcdR. TcdR is divergently transcribed from the operon and encodes a small protein that is required for efficient expression of the Escherichia coli tdc operon. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176110 [Multi-domain]  Cd Length: 201  Bit Score: 316.60  E-value: 8.66e-110
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08418    1 KVSIGVSSLIAHTLMPAVINRFKEQFPDVQISIYEGQLSSLLPELRDGRLDFAIGTLPDEMYLKELISEPLFESDFVVVA 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCDPLHG 255
Cdd:cd08418   81 RKDHPLQGARSLEELLDASWVLPGTRMGYYNNLLEALRRLGYNPRVAVRTDSIVSIINLVEKADFLTILSRDMGRGPLDS 160
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|.
gi 446808193 256 QGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRE 296
Cdd:cd08418  161 FRLITIPVEEPLPSADYYLIYRKKSRLTPLAEQLVELFRRY 201
LysR COG0583
DNA-binding transcriptional regulator, LysR family [Transcription];
7-298 2.73e-64

DNA-binding transcriptional regulator, LysR family [Transcription];


Pssm-ID: 440348 [Multi-domain]  Cd Length: 256  Bit Score: 202.79  E-value: 2.73e-64
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   7 IHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDI 86
Cdd:COG0583    3 LRQLRAFVAVAEEGSFTAAAERLGVSQPAVSRQIRRLEEELGVPLFERTGRGLRLTEAGERLLERARRILAELEEAEAEL 82
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  87 RQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTIntYYQGPYDHEFTFEKL 166
Cdd:COG0583   83 RALRGGPRGTLRIGAPPSLARYLLPPLLARFRARHPGVRLELREGNSDRLVDALLEGELDLAI--RLGPPPDPGLVARPL 160
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 167 LEKQFAIFCRPGHPAIGARSIkqlldyswtmptphgsyykhlsellddqaqtpqvgvvCETFSACISLVAKSDFLSILPE 246
Cdd:COG0583  161 GEERLVLVASPDHPLARRAPL-------------------------------------VNSLEALLAAVAAGLGIALLPR 203
                        250       260       270       280       290
                 ....*....|....*....|....*....|....*....|....*....|..
gi 446808193 247 EMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECG 298
Cdd:COG0583  204 FLAADELAAGRLVALPLPDPPPPRPLYLVWRRRRHLSPAVRAFLDFLREALA 255
TF_pcaQ TIGR02424
pca operon transcription factor PcaQ; Members of this family are LysR-family transcription ...
4-298 3.81e-44

pca operon transcription factor PcaQ; Members of this family are LysR-family transcription factors associated with operons for catabolism of protocatechuate. Members occur only in Proteobacteria. [Energy metabolism, Other, Regulatory functions, DNA interactions]


Pssm-ID: 274127 [Multi-domain]  Cd Length: 300  Bit Score: 152.18  E-value: 3.81e-44
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193    4 QVKIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQ 83
Cdd:TIGR02424   2 RIKFRHLQCFVEVARQGSVKRAAEALHITQPAVSKTLRELEEILGTPLFERDRRGIRLTRYGELFLRHAGASLAALRQGV 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   84 EDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTF 163
Cdd:TIGR02424  82 ASLSQLGEGEGPTVRIGALPTVAARLMPEVVKRFLARAPRLRVRIMTGPNAYLLDQLRVGALDLVVGRLGAPETMQGLSF 161
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  164 EKLLEKQFAIFCRPGHPAIGARSIK--QLLDYSWTMPtPHGSYYKHLSELLDDQAQTPQVGVVCETFSACIS--LVAKSD 239
Cdd:TIGR02424 162 EHLYNEPVVFVVRAGHPLLAAPSLPvaSLADYPVLLP-PEGSAIRPLAERLFIACGIPPPPQRIETVSGSFGrrYVQESD 240
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 446808193  240 FLSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECG 298
Cdd:TIGR02424 241 AIWIISRGVVALDLADGTLVELPFDTRETGGPVGLCTRPDTQLSRAAQLFVDALRSAAA 299
LysR_substrate pfam03466
LysR substrate binding domain; The structure of this domain is known and is similar to the ...
94-298 4.27e-40

LysR substrate binding domain; The structure of this domain is known and is similar to the periplasmic binding proteins. This domain binds a variety of ligands that caries in size and structure, such as amino acids, sugar phosphates, organic acids, metal cations, flavonoids, C6-ring carboxylic acids, H2O2, HOCl, homocysteine, NADPH, ATP, sulphate, muropeptides, acetate, salicylate, citrate, phenol- and quinolone derivatives, acetylserines, fatty acid CoA, shikimate, chorismate, homocysteine, indole-3-acetic acid, Na(I), c-di-GMP, ppGpp and hydrogen peroxide (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).


Pssm-ID: 460931 [Multi-domain]  Cd Length: 205  Bit Score: 138.96  E-value: 4.27e-40
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   94 AGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTIntYYQGPYDHEFTFEKLLEKQFAI 173
Cdd:pfam03466   1 SGRLRIGAPPTLASYLLPPLLARFRERYPDVELELTEGNSEELLDLLLEGELDLAI--RRGPPDDPGLEARPLGEEPLVL 78
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  174 FCRPGHPAIGAR--SIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCD 251
Cdd:pfam03466  79 VAPPDHPLARGEpvSLEDLADEPLILLPPGSGLRDLLDRALRAAGLRPRVVLEVNSLEALLQLVAAGLGIALLPRSAVAR 158
                         170       180       190       200
                  ....*....|....*....|....*....|....*....|....*..
gi 446808193  252 PLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECG 298
Cdd:pfam03466 159 ELADGRLVALPLPEPPLPRELYLVWRKGRPLSPAVRAFIEFLREALA 205
LysR_Sec_metab NF040786
selenium metabolism-associated LysR family transcriptional regulator; LysR family ...
9-197 1.89e-32

selenium metabolism-associated LysR family transcriptional regulator; LysR family transcriptional regulators regularly appear encoded adjacent to selenecysteine incorporation proteins such as SelB. This model represents one especially well-conserved subgroup of such transcription factors from species such as Merdimonas faecis, Sellimonas intestinalis, Syntrophotalea acetylenica, and Hydrogenivirga caldilitoris. Seed alignment members were selected by proximity to selB, but not all family members are expected to have similar genomic locations.


Pssm-ID: 468737 [Multi-domain]  Cd Length: 298  Bit Score: 121.57  E-value: 1.89e-32
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQ 88
Cdd:NF040786   5 QLEAFVNVAEYKSFSKAAKKLFLTQPTISAHISSLEKELGVRLFVRNTKEVSLTEDGKLLYEYAKEMLDLWEKLEEEFDR 84
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  89 RQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYqgPYDHEFTFEKLLE 168
Cdd:NF040786  85 YGKESKGVLRIGASTIPGQYLLPELLKKFKEKYPNVRFKLMISDSIKVIELLLEGEVDIGFTGTK--LEKKRLVYTPFYK 162
                        170       180       190
                 ....*....|....*....|....*....|...
gi 446808193 169 KQFAIFCRPGHPAI----GARSIKQLLDYSWTM 197
Cdd:NF040786 163 DRLVLITPNGTEKYrmlkEEISISELQKEPFIM 195
 
Name Accession Description Interval E-value
PRK09791 PRK09791
LysR family transcriptional regulator;
1-302 0e+00

LysR family transcriptional regulator;


Pssm-ID: 182077 [Multi-domain]  Cd Length: 302  Bit Score: 567.85  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   1 MAFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELR 80
Cdd:PRK09791   1 MAFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALTKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELR 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  81 AAQEDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHE 160
Cdd:PRK09791  81 AAQEDIRQRQGQLAGQINIGMGASIARSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHE 160
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 161 FTFEKLLEKQFAIFCRPGHPAIGARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDF 240
Cdd:PRK09791 161 FTFEKLLEKQFAVFCRPGHPAIGARSLKQLLDYSWTMPTPHGSYYKQLSELLDDQAQTPQVGVVCETFSACISLVAKSDF 240
                        250       260       270       280       290       300
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 446808193 241 LSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECGYLQS 302
Cdd:PRK09791 241 LSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDTRQTPLTASLITLFRRECGYLQS 302
PBP2_TdcA cd08418
The C-terminal substrate binding domain of LysR-type transcriptional regulator TdcA, which is ...
96-296 8.66e-110

The C-terminal substrate binding domain of LysR-type transcriptional regulator TdcA, which is involved in the degradation of L-serine and L-threonine, contains the type 2 periplasmic binding fold; TdcA, a member of the LysR family, activates the expression of the anaerobically-regulated tdcABCDEFG operon which is involved in the degradation of L-serine and L-threonine to acetate and propionate, respectively. The tdc operon is comprised of one regulatory gene tdcA and six structural genes, tdcB to tdcG. The expression of the tdc operon is affected by several transcription factors including the cAMP receptor protein (CRP), integration host factor (IHF), histone-like protein (HU), and the operon specific regulators TdcA and TcdR. TcdR is divergently transcribed from the operon and encodes a small protein that is required for efficient expression of the Escherichia coli tdc operon. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176110 [Multi-domain]  Cd Length: 201  Bit Score: 316.60  E-value: 8.66e-110
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08418    1 KVSIGVSSLIAHTLMPAVINRFKEQFPDVQISIYEGQLSSLLPELRDGRLDFAIGTLPDEMYLKELISEPLFESDFVVVA 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCDPLHG 255
Cdd:cd08418   81 RKDHPLQGARSLEELLDASWVLPGTRMGYYNNLLEALRRLGYNPRVAVRTDSIVSIINLVEKADFLTILSRDMGRGPLDS 160
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|.
gi 446808193 256 QGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRE 296
Cdd:cd08418  161 FRLITIPVEEPLPSADYYLIYRKKSRLTPLAEQLVELFRRY 201
LysR COG0583
DNA-binding transcriptional regulator, LysR family [Transcription];
7-298 2.73e-64

DNA-binding transcriptional regulator, LysR family [Transcription];


Pssm-ID: 440348 [Multi-domain]  Cd Length: 256  Bit Score: 202.79  E-value: 2.73e-64
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   7 IHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDI 86
Cdd:COG0583    3 LRQLRAFVAVAEEGSFTAAAERLGVSQPAVSRQIRRLEEELGVPLFERTGRGLRLTEAGERLLERARRILAELEEAEAEL 82
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  87 RQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTIntYYQGPYDHEFTFEKL 166
Cdd:COG0583   83 RALRGGPRGTLRIGAPPSLARYLLPPLLARFRARHPGVRLELREGNSDRLVDALLEGELDLAI--RLGPPPDPGLVARPL 160
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 167 LEKQFAIFCRPGHPAIGARSIkqlldyswtmptphgsyykhlsellddqaqtpqvgvvCETFSACISLVAKSDFLSILPE 246
Cdd:COG0583  161 GEERLVLVASPDHPLARRAPL-------------------------------------VNSLEALLAAVAAGLGIALLPR 203
                        250       260       270       280       290
                 ....*....|....*....|....*....|....*....|....*....|..
gi 446808193 247 EMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECG 298
Cdd:COG0583  204 FLAADELAAGRLVALPLPDPPPPRPLYLVWRRRRHLSPAVRAFLDFLREALA 255
PRK10341 PRK10341
transcriptional regulator TdcA;
6-299 5.38e-46

transcriptional regulator TdcA;


Pssm-ID: 182391 [Multi-domain]  Cd Length: 312  Bit Score: 157.33  E-value: 5.38e-46
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   6 KIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQED 85
Cdd:PRK10341   8 KTQHLVVFQEVIRSGSIGSAAKELGLTQPAVSKIINDIEDYFGVELIVRKNTGVTLTPAGQVLLSRSESITREMKNMVNE 87
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  86 IRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEK 165
Cdd:PRK10341  88 INGMSSEAVVDVSFGFPSLIGFTFMSDMINKFKEVFPKAQVSMYEAQLSSFLPAIRDGRLDFAIGTLSNEMKLQDLHVEP 167
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 166 LLEKQFAIFCRPGHPAIGARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILP 245
Cdd:PRK10341 168 LFESEFVLVASKSRTCTGTTTLESLKNEQWVLPQTNMGYYSELLTTLQRNGISIENIVKTDSVVTIYNLVLNADFLTVIP 247
                        250       260       270       280       290
                 ....*....|....*....|....*....|....*....|....*....|....
gi 446808193 246 EEMgCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECGY 299
Cdd:PRK10341 248 CDM-TSPFGSNQFITIPIEETLPVAQYAAVWSKNYRIKKAASVLVELAKEYSSY 300
TF_pcaQ TIGR02424
pca operon transcription factor PcaQ; Members of this family are LysR-family transcription ...
4-298 3.81e-44

pca operon transcription factor PcaQ; Members of this family are LysR-family transcription factors associated with operons for catabolism of protocatechuate. Members occur only in Proteobacteria. [Energy metabolism, Other, Regulatory functions, DNA interactions]


Pssm-ID: 274127 [Multi-domain]  Cd Length: 300  Bit Score: 152.18  E-value: 3.81e-44
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193    4 QVKIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQ 83
Cdd:TIGR02424   2 RIKFRHLQCFVEVARQGSVKRAAEALHITQPAVSKTLRELEEILGTPLFERDRRGIRLTRYGELFLRHAGASLAALRQGV 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   84 EDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTF 163
Cdd:TIGR02424  82 ASLSQLGEGEGPTVRIGALPTVAARLMPEVVKRFLARAPRLRVRIMTGPNAYLLDQLRVGALDLVVGRLGAPETMQGLSF 161
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  164 EKLLEKQFAIFCRPGHPAIGARSIK--QLLDYSWTMPtPHGSYYKHLSELLDDQAQTPQVGVVCETFSACIS--LVAKSD 239
Cdd:TIGR02424 162 EHLYNEPVVFVVRAGHPLLAAPSLPvaSLADYPVLLP-PEGSAIRPLAERLFIACGIPPPPQRIETVSGSFGrrYVQESD 240
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 446808193  240 FLSILPEEMGCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECG 298
Cdd:TIGR02424 241 AIWIISRGVVALDLADGTLVELPFDTRETGGPVGLCTRPDTQLSRAAQLFVDALRSAAA 299
LysR_substrate pfam03466
LysR substrate binding domain; The structure of this domain is known and is similar to the ...
94-298 4.27e-40

LysR substrate binding domain; The structure of this domain is known and is similar to the periplasmic binding proteins. This domain binds a variety of ligands that caries in size and structure, such as amino acids, sugar phosphates, organic acids, metal cations, flavonoids, C6-ring carboxylic acids, H2O2, HOCl, homocysteine, NADPH, ATP, sulphate, muropeptides, acetate, salicylate, citrate, phenol- and quinolone derivatives, acetylserines, fatty acid CoA, shikimate, chorismate, homocysteine, indole-3-acetic acid, Na(I), c-di-GMP, ppGpp and hydrogen peroxide (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).


Pssm-ID: 460931 [Multi-domain]  Cd Length: 205  Bit Score: 138.96  E-value: 4.27e-40
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   94 AGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTIntYYQGPYDHEFTFEKLLEKQFAI 173
Cdd:pfam03466   1 SGRLRIGAPPTLASYLLPPLLARFRERYPDVELELTEGNSEELLDLLLEGELDLAI--RRGPPDDPGLEARPLGEEPLVL 78
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  174 FCRPGHPAIGAR--SIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCD 251
Cdd:pfam03466  79 VAPPDHPLARGEpvSLEDLADEPLILLPPGSGLRDLLDRALRAAGLRPRVVLEVNSLEALLQLVAAGLGIALLPRSAVAR 158
                         170       180       190       200
                  ....*....|....*....|....*....|....*....|....*..
gi 446808193  252 PLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQFRRECG 298
Cdd:pfam03466 159 ELADGRLVALPLPEPPLPRELYLVWRKGRPLSPAVRAFIEFLREALA 205
PBP2_GbpR cd08435
The C-terminal substrate binding domain of galactose-binding protein regulator contains the ...
96-290 1.71e-32

The C-terminal substrate binding domain of galactose-binding protein regulator contains the type 2 periplasmic binding fold; Galactose-binding protein regulator (GbpR), a member of the LysR family of bacterial transcriptional regulators, regulates the expression of chromosomal virulence gene chvE. The chvE gene is involved in the uptake of specific sugars, in chemotaxis to these sugars, and in the VirA-VirG two-component signal transduction system. In the presence of an inducing sugar such as L-arabinose, D-fucose, or D-galactose, GbpR activates chvE expression, while in the absence of an inducing sugar, GbpR represses expression. The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176126 [Multi-domain]  Cd Length: 201  Bit Score: 118.91  E-value: 1.71e-32
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08435    1 TVRVGAVPAAAPVLLPPAIARLLARHPRLTVRVVEGTSDELLEGLRAGELDLAIGRLADDEQPPDLASEELADEPLVVVA 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGAR--SIKQLLDYSWTMPTPHGSYYKHLSELLDDQA-QTPQVGVVCETFSACISLVAKSDFLSILPEEMGCDP 252
Cdd:cd08435   81 RPGHPLARRArlTLADLADYPWVLPPPGTPLRQRLEQLFAAAGlPLPRNVVETASISALLALLARSDMLAVLPRSVAEDE 160
                        170       180       190
                 ....*....|....*....|....*....|....*...
gi 446808193 253 LHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLI 290
Cdd:cd08435  161 LRAGVLRELPLPLPTSRRPIGITTRRGGPLSPAARALL 198
LysR_Sec_metab NF040786
selenium metabolism-associated LysR family transcriptional regulator; LysR family ...
9-197 1.89e-32

selenium metabolism-associated LysR family transcriptional regulator; LysR family transcriptional regulators regularly appear encoded adjacent to selenecysteine incorporation proteins such as SelB. This model represents one especially well-conserved subgroup of such transcription factors from species such as Merdimonas faecis, Sellimonas intestinalis, Syntrophotalea acetylenica, and Hydrogenivirga caldilitoris. Seed alignment members were selected by proximity to selB, but not all family members are expected to have similar genomic locations.


Pssm-ID: 468737 [Multi-domain]  Cd Length: 298  Bit Score: 121.57  E-value: 1.89e-32
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQ 88
Cdd:NF040786   5 QLEAFVNVAEYKSFSKAAKKLFLTQPTISAHISSLEKELGVRLFVRNTKEVSLTEDGKLLYEYAKEMLDLWEKLEEEFDR 84
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  89 RQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYqgPYDHEFTFEKLLE 168
Cdd:NF040786  85 YGKESKGVLRIGASTIPGQYLLPELLKKFKEKYPNVRFKLMISDSIKVIELLLEGEVDIGFTGTK--LEKKRLVYTPFYK 162
                        170       180       190
                 ....*....|....*....|....*....|...
gi 446808193 169 KQFAIFCRPGHPAI----GARSIKQLLDYSWTM 197
Cdd:NF040786 163 DRLVLITPNGTEKYrmlkEEISISELQKEPFIM 195
PBP2_LTTR_substrate cd05466
The substrate binding domain of LysR-type transcriptional regulators (LTTRs), a member of the ...
97-290 4.75e-32

The substrate binding domain of LysR-type transcriptional regulators (LTTRs), a member of the type 2 periplasmic binding fold protein superfamily; This model and hierarchy represent the the substrate-binding domain of the LysR-type transcriptional regulators that form the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, oxidative stress responses, nodule formation of nitrogen-fixing bacteria, synthesis of virulence factors, toxin production, attachment and secretion, to name a few. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis. Besides transport proteins, the PBP2 superfamily includes the substrate-binding domains from ionotropic glutamate receptors, LysR-like transcriptional regulators, and unorthodox sensor proteins involved in signal transduction.


Pssm-ID: 176102 [Multi-domain]  Cd Length: 197  Bit Score: 117.70  E-value: 4.75e-32
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  97 INIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTyyqGPYDHE-FTFEKLLEKQFAIFC 175
Cdd:cd05466    2 LRIGASPSIAAYLLPPLLAAFRQRYPGVELSLVEGGSSELLEALLEGELDLAIVA---LPVDDPgLESEPLFEEPLVLVV 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGARSI--KQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMgCDPL 253
Cdd:cd05466   79 PPDHPLAKRKSVtlADLADEPLILFERGSGLRRLLDRAFAEAGFTPNIALEVDSLEAIKALVAAGLGIALLPESA-VEEL 157
                        170       180       190
                 ....*....|....*....|....*....|....*..
gi 446808193 254 HGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLI 290
Cdd:cd05466  158 ADGGLVVLPLEDPPLSRTIGLVWRKGRYLSPAARAFL 194
PRK11242 PRK11242
DNA-binding transcriptional regulator CynR; Provisional
9-283 4.55e-28

DNA-binding transcriptional regulator CynR; Provisional


Pssm-ID: 183051 [Multi-domain]  Cd Length: 296  Bit Score: 109.66  E-value: 4.55e-28
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQ 88
Cdd:PRK11242   5 HIRYFLAVAEHGNFTRAAEALHVSQPTLSQQIRQLEESLGVQLFDRSGRTVRLTDAGEVYLRYARRALQDLEAGRRAIHD 84
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  89 RQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINtyYQGPYDHEFTFEKLLE 168
Cdd:PRK11242  85 VADLSRGSLRLAMTPTFTAYLIGPLIDAFHARYPGITLTIREMSQERIEALLADDELDVGIA--FAPVHSPEIEAQPLFT 162
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 169 KQFAIFCRPGHPAIGAR---SIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILP 245
Cdd:PRK11242 163 ETLALVVGRHHPLAARRkalTLDELADEPLVLLSAEFATREQIDRYFRRHGVTPRVAIEANSISAVLEIVRRGRLATLLP 242
                        250       260       270
                 ....*....|....*....|....*....|....*....
gi 446808193 246 EEMGcdplHGQ-GLVMLPVSEILPKATYYLIQRRDSRQT 283
Cdd:PRK11242 243 AAIA----REHdGLCAIPLDPPLPQRTAALLRRKGAYRS 277
PBP2_LTTR_like_4 cd08440
TThe C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
104-291 2.57e-23

TThe C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator, contains the type 2 periplasmic binding fold; LysR-transcriptional regulators comprise the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to a name a few. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176131 [Multi-domain]  Cd Length: 197  Bit Score: 94.51  E-value: 2.57e-23
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 104 SISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTyyQGPYDHEFTFEKLLEKQFAIFCRPGHPAIG 183
Cdd:cd08440    9 SLAATLLPPVLAAFRRRHPGIRVRLRDVSAEQVIEAVRSGEVDFGIGS--EPEADPDLEFEPLLRDPFVLVCPKDHPLAR 86
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 184 ARSI--KQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPeEMGCDPLHGQGLVML 261
Cdd:cd08440   87 RRSVtwAELAGYPLIALGRGSGVRALIDRALAAAGLTLRPAYEVSHMSTALGMVAAGLGVAVLP-ALALPLADHPGLVAR 165
                        170       180       190
                 ....*....|....*....|....*....|..
gi 446808193 262 PVSEilPKATY--YLIQRRDSRQTPLTASLIT 291
Cdd:cd08440  166 PLTE--PVVTRtvGLIRRRGRSLSPAAQAFLD 195
PRK09986 PRK09986
LysR family transcriptional regulator;
10-293 3.74e-21

LysR family transcriptional regulator;


Pssm-ID: 182183 [Multi-domain]  Cd Length: 294  Bit Score: 90.94  E-value: 3.74e-21
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQR 89
Cdd:PRK09986  12 LRYFLAVAEELHFGRAAARLNISQPPLSIHIKELEDQLGTPLFIRHSRSVVLTHAGKILMEESRRLLDNAEQSLARVEQI 91
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  90 QGQLAGQINIGM-GASISRSLMPAvISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLE 168
Cdd:PRK09986  92 GRGEAGRIEIGIvGTALWGRLRPA-MRHFLKENPNVEWLLRELSPSMQMAALERRELDAGIWRMADLEPNPGFTSRRLHE 170
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 169 KQFAIFCRPGHPAIGARSI--KQLLD-YSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILP 245
Cdd:PRK09986 171 SAFAVAVPEEHPLASRSSVplKALRNeYFITLPFVHSDWGKFLQRVCQQAGFSPQIIRQVNEPQTVLAMVSMGIGITLLP 250
                        250       260       270       280
                 ....*....|....*....|....*....|....*....|....*...
gi 446808193 246 EEMGcdPLHGQGLVMLPVSEILPkATYYLIQRRDSrQTPLTASLITQF 293
Cdd:PRK09986 251 DSYA--QIPWPGVVFRPLKERIP-ADLYAVYHPDQ-VTPALNKLLAAL 294
HTH_1 pfam00126
Bacterial regulatory helix-turn-helix protein, lysR family;
7-66 6.18e-21

Bacterial regulatory helix-turn-helix protein, lysR family;


Pssm-ID: 459683 [Multi-domain]  Cd Length: 60  Bit Score: 83.97  E-value: 6.18e-21
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193    7 IHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGE 66
Cdd:pfam00126   1 LRQLRLFVAVAETGSFTAAAERLGLSQPAVSRQIKRLEEELGVPLFERTTRGVRLTEAGE 60
PRK09906 PRK09906
DNA-binding transcriptional regulator HcaR; Provisional
10-292 1.30e-20

DNA-binding transcriptional regulator HcaR; Provisional


Pssm-ID: 182137 [Multi-domain]  Cd Length: 296  Bit Score: 89.44  E-value: 1.30e-20
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQr 89
Cdd:PRK09906   6 LRYFVAVAEELNFTKAAEKLHTAQPSLSQQIKDLENCVGVPLLVRDKRKVALTAAGEVFLQDARAILEQAEKAKLRARK- 84
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  90 QGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVrimegQLVSMIN-----ELRQGELD--FTINTYYQGPYDHEFT 162
Cdd:PRK09906  85 IVQEDRQLTIGFVPSAEVNLLPKVLPMFRLRHPDTLI-----ELVSLITtqqeeKLRRGELDvgFMRHPVYSDEIDYLEL 159
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 163 FEKLLekqfaIFCRP-GHPAIGARSI--KQL--LDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAK 237
Cdd:PRK09906 160 LDEPL-----VVVLPvDHPLAHEKEItaAQLdgVNFISTDPAYSGSLAPIIKAWFAQHNSQPNIVQVATNILVTMNLVGM 234
                        250       260       270       280       290
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 446808193 238 SDFLSILPEEMgcDPLHGQGLVMLPVSEILPKATYYLIQRRDSrQTPLTASLITQ 292
Cdd:PRK09906 235 GLGCTIIPGYM--NNFNTGQVVFRPLAGNVPSIALLMAWKKGE-MKPALRDFIAI 286
rbcR CHL00180
LysR transcriptional regulator; Provisional
9-128 3.16e-20

LysR transcriptional regulator; Provisional


Pssm-ID: 177082 [Multi-domain]  Cd Length: 305  Bit Score: 88.54  E-value: 3.16e-20
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLIL---EELRAAQED 85
Cdd:CHL00180   9 QLRILKAIATEGSFKKAAESLYISQPAVSLQIKNLEKQLNIPLFDRSKNKASLTEAGELLLRYGNRILalcEETCRALED 88
                         90       100       110       120
                 ....*....|....*....|....*....|....*....|...
gi 446808193  86 IRQRQGqlaGQINIGMGASISRSLMPAVISRFHQQHPQVKVRI 128
Cdd:CHL00180  89 LKNLQR---GTLIIGASQTTGTYLMPRLIGLFRQRYPQINVQL 128
PRK11716 PRK11716
HTH-type transcriptional activator IlvY;
30-149 4.54e-20

HTH-type transcriptional activator IlvY;


Pssm-ID: 236961 [Multi-domain]  Cd Length: 269  Bit Score: 87.57  E-value: 4.54e-20
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  30 NMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQRQGQLAGQINIGMGASISRSL 109
Cdd:PRK11716   2 HVSPSTLSRQIQRLEEELGQPLFVRDNRSVTLTEAGEELRPFAQQTLLQWQQLRHTLDQQGPSLSGELSLFCSVTAAYSH 81
                         90       100       110       120
                 ....*....|....*....|....*....|....*....|
gi 446808193 110 MPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTI 149
Cdd:PRK11716  82 LPPILDRFRAEHPLVEIKLTTGDAADAVEKVQSGEADLAI 121
PRK11139 PRK11139
DNA-binding transcriptional activator GcvA; Provisional
10-294 6.30e-20

DNA-binding transcriptional activator GcvA; Provisional


Pssm-ID: 182990 [Multi-domain]  Cd Length: 297  Bit Score: 87.59  E-value: 6.30e-20
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQR 89
Cdd:PRK11139  11 LRAFEAAARHLSFTRAAEELFVTQAAVSHQIKALEDFLGLKLFRRRNRSLLLTEEGQRYFLDIREIFDQLAEATRKLRAR 90
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  90 QGqlAGQINIGMGASI-SRSLMPAvISRFHQQHPQVKVRImegQLVSMINELRQGELDFTIntYY-QGPYDHEFTfEKLL 167
Cdd:PRK11139  91 SA--KGALTVSLLPSFaIQWLVPR-LSSFNEAHPDIDVRL---KAVDRLEDFLRDDVDVAI--RYgRGNWPGLRV-EKLL 161
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 168 EKQFAIFCRP----------------GHPAI---GARSIKQLLDYS--WTMPTPHGSYYKHLSELLddQAQTPQVGVVCe 226
Cdd:PRK11139 162 DEYLLPVCSPallnggkplktpedlaRHTLLhddSREDWRAWFRAAglDDLNVQQGPIFSHSSMAL--QAAIHGQGVAL- 238
                        250       260       270       280       290       300
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 446808193 227 tfsACISLVAKsdflsilpeemgcDPLHGQgLVMlPVSEILP-KATYYLIQRRDSRQTPltasLITQFR 294
Cdd:PRK11139 239 ---GNRVLAQP-------------EIEAGR-LVC-PFDTVLPsPNAFYLVCPDSQAELP----KVAAFR 285
PRK12682 PRK12682
transcriptional regulator CysB-like protein; Reviewed
6-151 6.37e-20

transcriptional regulator CysB-like protein; Reviewed


Pssm-ID: 183679 [Multi-domain]  Cd Length: 309  Bit Score: 87.74  E-value: 6.37e-20
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   6 KIHQIRAFVEVARQG-SIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVT-LTDAGESFYQHASLILEELRAAQ 83
Cdd:PRK12682   2 NLQQLRFVREAVRRNlNLTEAAKALHTSQPGVSKAIIELEEELGIEIFIRHGKRLKgLTEPGKAVLDVIERILREVGNIK 81
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 446808193  84 EDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEG---QLVSMInelRQGELDFTINT 151
Cdd:PRK12682  82 RIGDDFSNQDSGTLTIATTHTQARYVLPRVVAAFRKRYPKVNLSLHQGspdEIARMV---ISGEADIGIAT 149
PRK12684 PRK12684
CysB family HTH-type transcriptional regulator;
6-151 1.21e-19

CysB family HTH-type transcriptional regulator;


Pssm-ID: 237173 [Multi-domain]  Cd Length: 313  Bit Score: 86.95  E-value: 1.21e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   6 KIHQIRAFVEVARQG-SIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVT-LTDAGESFYQHASLILEEL---- 79
Cdd:PRK12684   2 NLHQLRFVREAVRQNfNLTEAAKALYTSQPGVSKAIIELEDELGVEIFTRHGKRLRgLTEPGRIILASVERILQEVenlk 81
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 446808193  80 RAAQEDIRQRQGQLAgqinIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINT 151
Cdd:PRK12684  82 RVGKEFAAQDQGNLT----IATTHTQARYALPAAIKEFKKRYPKVRLSILQGSPTQIAEMVLHGQADLAIAT 149
PBP2_Nitroaromatics_like cd08417
The C-terminal substrate binding domain of LysR-type transcriptional regulators that involved ...
98-280 1.37e-19

The C-terminal substrate binding domain of LysR-type transcriptional regulators that involved in the catabolism of nitroaromatic/naphthalene compounds and that of related regulators; contains the type 2 periplasmic binding fold; This CD includes the C-terminal substrate binding domain of LysR-type transcriptional regulators involved in the catabolism of dinitrotoluene and similar compounds, such as DntR, NahR, and LinR. The transcription of the genes encoding enzymes involved in such degradation is regulated and expression of these enzymes is enhanced by inducers, which are either an intermediate in the metabolic pathway or compounds to be degraded. Also included are related LysR-type regulators clustered together in phylogenetic trees, including NodD, ToxR, LeuO, SyrM, TdcA, and PnbR. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176109 [Multi-domain]  Cd Length: 200  Bit Score: 84.57  E-value: 1.37e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  98 NIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPydHEFTFEKLLEKQFAIFCRP 177
Cdd:cd08417    3 RIAASDYLEALLLPPLLARLRQEAPGVRLRFVPLDRDDLEEALESGEIDLAIGVFPELP--PGLRSQPLFEDRFVCVARK 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 178 GHPAIGAR-SIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCDPLHGQ 256
Cdd:cd08417   81 DHPLAGGPlTLEDYLAAPHVLVSPRGRGHGLVDDALAELGLSRRVALTVPHFLAAPALVAGTDLIATVPRRLAEALAERL 160
                        170       180
                 ....*....|....*....|....*.
gi 446808193 257 GLVMLPVSEILPKATYYLI--QRRDS 280
Cdd:cd08417  161 GLRVLPLPFELPPFTVSLYwhPRRDR 186
PBP2_LTTR_aromatics_like cd08414
The C-terminal substrate binding domain of LysR-type transcriptional regulators involved in ...
96-290 3.17e-19

The C-terminal substrate binding domain of LysR-type transcriptional regulators involved in the catabolism of aromatic compounds and that of other related regulators, contains type 2 periplasmic binding fold; This CD includes the C-terminal substrate binding domain of LTTRs involved in degradation of aromatic compounds, such as CbnR, BenM, CatM, ClcR and TfdR, as well as that of other transcriptional regulators clustered together in phylogenetic trees, including XapR, HcaR, MprR, IlvR, BudR, AlsR, LysR, and OccR. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis. Besides transport proteins, the PBP2 superfamily includes the substrate-binding domains from ionotropic glutamate receptors, LysR-like transcriptional regulators, and unorthodox sensor proteins involved in signal transduction.


Pssm-ID: 176106 [Multi-domain]  Cd Length: 197  Bit Score: 83.71  E-value: 3.17e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYqgPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08414    1 RLRIGFVGSALYGLLPRLLRRFRARYPDVELELREMTTAEQLEALRAGRLDVGFVRPP--PDPPGLASRPLLREPLVVAL 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGARSI--KQLLDYSWTMPTPH--GSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCd 251
Cdd:cd08414   79 PADHPLAARESVslADLADEPFVLFPREpgPGLYDQILALCRRAGFTPRIVQEASDLQTLLALVAAGLGVALVPASVAR- 157
                        170       180       190
                 ....*....|....*....|....*....|....*....
gi 446808193 252 pLHGQGLVMLPVSEILPKATYYLIQRRDSRqTPLTASLI 290
Cdd:cd08414  158 -LQRPGVVYRPLADPPPRSELALAWRRDNA-SPALRAFL 194
PRK10837 PRK10837
putative DNA-binding transcriptional regulator; Provisional
9-203 3.28e-18

putative DNA-binding transcriptional regulator; Provisional


Pssm-ID: 182768 [Multi-domain]  Cd Length: 290  Bit Score: 82.81  E-value: 3.28e-18
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEelRAAqeDIRQ 88
Cdd:PRK10837   7 QLEVFAEVLKSGSTTQASVMLALSQSAVSAALTDLEGQLGVQLFDRVGKRLVVNEHGRLLYPRALALLE--QAV--EIEQ 82
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  89 RQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTIntyYQGPYDH-EFTFEKLL 167
Cdd:PRK10837  83 LFREDNGALRIYASSTIGNYILPAMIARYRRDYPQLPLELSVGNSQDVINAVLDFRVDIGL---IEGPCHSpELISEPWL 159
                        170       180       190
                 ....*....|....*....|....*....|....*..
gi 446808193 168 EKQFAIFCRPGHP-AIGARSIKQLLDYSWTMpTPHGS 203
Cdd:PRK10837 160 EDELVVFAAPDSPlARGPVTLEQLAAAPWIL-RERGS 195
PRK12683 PRK12683
transcriptional regulator CysB-like protein; Reviewed
1-187 4.17e-18

transcriptional regulator CysB-like protein; Reviewed


Pssm-ID: 237172 [Multi-domain]  Cd Length: 309  Bit Score: 82.78  E-value: 4.17e-18
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   1 MAFQvkihQIRAFVEVARQG-SIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVT-LTDAGESFYQHASLIL-- 76
Cdd:PRK12683   1 MNFQ----QLRIIREAVRQNfNLTEVANALYTSQSGVSKQIKDLEDELGVEIFIRRGKRLTgLTEPGKELLQIVERMLld 76
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  77 -EELRAAQEDIRQRQgqlAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEG---QLVSMineLRQGELDFTINTY 152
Cdd:PRK12683  77 aENLRRLAEQFADRD---SGHLTVATTHTQARYALPKVVRQFKEVFPKVHLALRQGspqEIAEM---LLNGEADIGIATE 150
                        170       180       190
                 ....*....|....*....|....*....|....*
gi 446808193 153 YQGPYDHEFTFEkLLEKQFAIFCRPGHPAIGARSI 187
Cdd:PRK12683 151 ALDREPDLVSFP-YYSWHHVVVVPKGHPLTGRENL 184
PRK11233 PRK11233
nitrogen assimilation transcriptional regulator; Provisional
13-248 6.42e-17

nitrogen assimilation transcriptional regulator; Provisional


Pssm-ID: 183045 [Multi-domain]  Cd Length: 305  Bit Score: 79.34  E-value: 6.42e-17
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  13 FVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQRQGQ 92
Cdd:PRK11233   9 FVKIVDIGSLTQAAEVLHIAQPALSQQVATLEGELNQQLLIRTKRGVTPTEAGKILYTHARAILRQCEQAQLAVHNVGQA 88
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  93 LAGQINIGM-----GASISRSLMPAVisrfHQQHPQVKVRIMEGQLVSMINELRQGELDFTIntYYQGPYDHEFTFEKLL 167
Cdd:PRK11233  89 LSGQVSIGLapgtaASSLTMPLLQAV----RAEFPGIVLYLHENSGATLNEKLMNGQLDMAV--IYEHSPVAGLSSQPLL 162
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 168 EKQFAIFCRPGHPaigARSIK--QLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQvgVVCE-----TFSACISlvakSDF 240
Cdd:PRK11233 163 KEDLFLVGTQDCP---GQSVDlaAVAQMNLFLPRDYSAVRLRVDEAFSLRRLTAK--VIGEiesiaTLTAAIA----SGM 233

                 ....*....
gi 446808193 241 -LSILPEEM 248
Cdd:PRK11233 234 gVTVLPESA 242
PBP2_Nac cd08433
The C-teminal substrate binding domain of LysR-like nitrogen assimilation control (NAC) ...
99-285 1.70e-16

The C-teminal substrate binding domain of LysR-like nitrogen assimilation control (NAC) protein, contains the type 2 periplasmic binding fold; The NAC is a LysR-type transcription regulator that activates expression of operons such as hut (histidine utilization) and ure (urea utilization), allowing use of non-preferred (poor) nitrogen sources, and represses expression of operons, such as glutamate dehydrogenase (gdh), allowing assimilation of the preferred nitrogen source. The expression of the nac gene is fully dependent on the nitrogen regulatory system (NTR) and the sigma54-containing RNA polymerase (sigma54-RNAP). In response to nitrogen starvation, NTR system activates the expression of nac, and NAC activates the expression of hut, ure, and put (proline utilization). NAC is not involved in the transcription of Sigma70-RNAP operons such as glnA, which directly respond by the NTR system, but activates the transcription of sigma70-RNAP dependent operons such as hut. Hence, NAC allows the coupling of sigma70-RNAP dependent operons to the sigma54-RNAP dependent NTR system. This substrate-binding domain has significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176124  Cd Length: 198  Bit Score: 76.09  E-value: 1.70e-16
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  99 IGMGASISRSLMPAVISRFHQQHPQVKVRIME---GQLVSMineLRQGELDFTIntYYQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08433    4 VGLPPSAASVLAVPLLRAVRRRYPGIRLRIVEglsGHLLEW---LLNGRLDLAL--LYGPPPIPGLSTEPLLEEDLFLVG 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGARSI--KQLLDYSWTMP-TPHGsyykhLSELLDDQAQ----TPQVGVVCETFSACISLVAKSDFLSILPEEM 248
Cdd:cd08433   79 PADAPLPRGAPVplAELARLPLILPsRGHG-----LRRLVDEAAAraglTLNVVVEIDSVATLKALVAAGLGYTILPASA 153
                        170       180       190
                 ....*....|....*....|....*....|....*..
gi 446808193 249 GCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPL 285
Cdd:cd08433  154 VAAEVAAGRLVAAPIVDPALTRTLSLATPRDRPLSPA 190
PBP2_LTTR_like_5 cd08426
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
96-293 1.46e-15

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator, contains the type 2 periplasmic binding fold; LysR-transcriptional regulators comprise the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to a name a few. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176117 [Multi-domain]  Cd Length: 199  Bit Score: 73.50  E-value: 1.46e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDftINTYYQGPydHEFTFEKLLEKQFAI-- 173
Cdd:cd08426    1 RVRVATGEGLAAELLPSLIARFRQRYPGVFFTVDVASTADVLEAVLSGEAD--IGLAFSPP--PEPGIRVHSRQPAPIga 76
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 174 FCRPGHPAIGAR--SIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPE-EMGC 250
Cdd:cd08426   77 VVPPGHPLARQPsvTLAQLAGYPLALPPPSFSLRQILDAAFARAGVQLEPVLISNSIETLKQLVAAGGGISLLTElAVRR 156
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|...
gi 446808193 251 DPLHGQgLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQF 293
Cdd:cd08426  157 EIRRGQ-LVAVPLADPHMNHRQLELQTRAGRQLPAAASAFLQL 198
cysB PRK12681
HTH-type transcriptional regulator CysB;
6-151 3.80e-15

HTH-type transcriptional regulator CysB;


Pssm-ID: 183678 [Multi-domain]  Cd Length: 324  Bit Score: 74.55  E-value: 3.80e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   6 KIHQIRAFVEVARQG-SIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVT-LTDAGESFYQHASLILEELRA-- 81
Cdd:PRK12681   2 KLQQLRYIVEVVNHNlNVSATAEGLYTSQPGISKQVRMLEDELGIQIFARSGKHLTqVTPAGEEIIRIAREILSKVESik 81
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 446808193  82 --AQEDIRQRQGQLagqiNIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINT 151
Cdd:PRK12681  82 svAGEHTWPDKGSL----YIATTHTQARYALPPVIKGFIERYPRVSLHMHQGSPTQIAEAAAKGNADFAIAT 149
PRK10094 PRK10094
HTH-type transcriptional activator AllS;
10-180 4.71e-15

HTH-type transcriptional activator AllS;


Pssm-ID: 182237 [Multi-domain]  Cd Length: 308  Bit Score: 74.07  E-value: 4.71e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQR 89
Cdd:PRK10094   7 LRTFIAVAETGSFSKAAERLCKTTATISYRIKLLEENTGVALFFRTTRSVTLTAAGEHLLSQARDWLSWLESMPSELQQV 86
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  90 QGQLAGQINIGMGASI-SRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLE 168
Cdd:PRK10094  87 NDGVERQVNIVINNLLyNPQAVAQLLAWLNERYPFTQFHISRQIYMGVWDSLLYEGFSLAIGVTGTEALANTFSLDPLGS 166
                        170
                 ....*....|..
gi 446808193 169 KQFAIFCRPGHP 180
Cdd:PRK10094 167 VQWRFVMAADHP 178
PRK09801 PRK09801
LysR family transcriptional regulator;
10-175 1.87e-14

LysR family transcriptional regulator;


Pssm-ID: 182085 [Multi-domain]  Cd Length: 310  Bit Score: 72.38  E-value: 1.87e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQR 89
Cdd:PRK09801  11 LQVLVEIVHSGSFSAAAATLGQTPAFVTKRIQILENTLATTLLNRSARGVALTESGQRCYEHALEILTQYQRLVDDVTQI 90
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  90 QGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRImegQLVSMINELRQGELDFTINTYYQGPydhEFTFEKLLEK 169
Cdd:PRK09801  91 KTRPEGMIRIGCSFGFGRSHIAPAITELMRNYPELQVHF---ELFDRQIDLVQDNIDLDIRINDEIP---DYYIAHLLTK 164

                 ....*.
gi 446808193 170 QFAIFC 175
Cdd:PRK09801 165 NKRILC 170
PBP2_LTTR_like_6 cd08423
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
103-293 2.07e-14

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator, contains the type 2 periplasmic binding fold; LysR-transcriptional regulators comprise the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to a name a few. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176115 [Multi-domain]  Cd Length: 200  Bit Score: 70.32  E-value: 2.07e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 103 ASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPY---DHEFTFEKLLEKQFAIFCRPGH 179
Cdd:cd08423    8 PTAAAALLPPALAALRARHPGLEVRLREAEPPESLDALRAGELDLAVVFDYPVTPppdDPGLTRVPLLDDPLDLVLPADH 87
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 180 PAIGARSIK--QLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPeEMGCDPLHgQG 257
Cdd:cd08423   88 PLAGREEVAlaDLADEPWIAGCPGSPCHRWLVRACRAAGFTPRIAHEADDYATVLALVAAGLGVALVP-RLALGARP-PG 165
                        170       180       190
                 ....*....|....*....|....*....|....*.
gi 446808193 258 LVMLPVSEiLPKATYYLIQRRDSRQTPLTASLITQF 293
Cdd:cd08423  166 VVVRPLRP-PPTRRIYAAVRAGAARRPAVAAALEAL 200
PBP2_CysL_like cd08420
C-terminal substrate binding domain of LysR-type transcriptional regulator CysL, which ...
102-291 4.45e-14

C-terminal substrate binding domain of LysR-type transcriptional regulator CysL, which activates the transcription of the cysJI operon encoding sulfite reductase, contains the type 2 periplasmic binding fold; CysL, also known as YwfK, is a regular of sulfur metabolism in Bacillus subtilis. Sulfur is required for the synthesis of proteins and essential cofactors in all living organism. Sulfur can be assimilated either from inorganic sources (sulfate and thiosulfate), or from organic sources (sulfate esters, sulfamates, and sulfonates). CysL activates the transcription of the cysJI operon encoding sulfite reductase, which reduces sulfite to sulfide. Both cysL mutant and cysJI mutant are unable to grow using sulfate or sulfite as the sulfur source. Like other LysR-type regulators, CysL also negatively regulates its own transcription. In Escherichia coli, three LysR-type activators are involved in the regulation of sulfur metabolism: CysB, Cbl and MetR. The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176112 [Multi-domain]  Cd Length: 201  Bit Score: 69.44  E-value: 4.45e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 102 GAS--ISRSLMPAVISRFHQQHPQVKVRIMEG---QLVSMineLRQGELDFTIntyYQGPYDH-EFTFEKLLEKQFAIFC 175
Cdd:cd08420    5 GASttIGEYLLPRLLARFRKRYPEVRVSLTIGnteEIAER---VLDGEIDLGL---VEGPVDHpDLIVEPFAEDELVLVV 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHP--AIGARSIKQLLDYSWTMPTPhGS-----YYKHLSELLDDQAQtPQVGVVCETFSACISLVAKSDFLSILPEEM 248
Cdd:cd08420   79 PPDHPlaGRKEVTAEELAAEPWILREP-GSgtrevFERALAEAGLDGLD-LNIVMELGSTEAIKEAVEAGLGISILSRLA 156
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|...
gi 446808193 249 GCDPLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLIT 291
Cdd:cd08420  157 VRKELELGRLVALPVEGLRLTRPFSLIYHKDKYLSPAAEAFLE 199
PRK11482 PRK11482
DNA-binding transcriptional regulator;
22-246 5.33e-14

DNA-binding transcriptional regulator;


Pssm-ID: 183159 [Multi-domain]  Cd Length: 317  Bit Score: 70.91  E-value: 5.33e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  22 IRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQeDIrqrQGQLAGQ--INI 99
Cdd:PRK11482  46 IVNAAKILNLTPSAISQSIQKLRVIFPDPLFIRKGQGVTPTAYATHLHEYISQGLESILGAL-DI---TGSYDKQrtITI 121
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 100 GMGASISRSLMPAVISRFHQQHPQVKVRIMegQLVSMINELRQGELDFTINTYYQGpyDHEFTFEKLLEKQFAIFCRPGH 179
Cdd:PRK11482 122 ATTPSVGALVMPVIYQAIKTHYPQLLLRNI--PISDAENQLSQFQTDLIIDTHSCS--NRTIQHHVLFTDNVVLVCRQGH 197
                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 446808193 180 PAI-GARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPE 246
Cdd:PRK11482 198 PLLsLEDDEETLDNAEHTLLLPEGQNFSGLRQRLQEMFPDRQISFSSYNILTIAALIASSDMLGIMPS 265
PRK11151 PRK11151
DNA-binding transcriptional regulator OxyR; Provisional
10-149 4.58e-13

DNA-binding transcriptional regulator OxyR; Provisional


Pssm-ID: 182999 [Multi-domain]  Cd Length: 305  Bit Score: 68.13  E-value: 4.58e-13
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAF---VEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDI 86
Cdd:PRK11151   3 IRDLeylVALAEHRHFRRAADSCHVSQPTLSGQIRKLEDELGVMLLERTSRKVLFTQAGLLLVDQARTVLREVKVLKEMA 82
                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 446808193  87 RQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTI 149
Cdd:PRK11151  83 SQQGETMSGPLHIGLIPTVGPYLLPHIIPMLHQTFPKLEMYLHEAQTHQLLAQLDSGKLDCAI 145
PRK10082 PRK10082
hypochlorite stress DNA-binding transcriptional regulator HypT;
14-167 1.14e-12

hypochlorite stress DNA-binding transcriptional regulator HypT;


Pssm-ID: 182228 [Multi-domain]  Cd Length: 303  Bit Score: 67.00  E-value: 1.14e-12
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  14 VEVARQGSIRGASRmlNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQRQGQL 93
Cdd:PRK10082  22 LEKCRNFSQAAVSR--NVSQPAFSRRIRALEQAIGVELFNRQVTPLQLSEQGKIFHSQIRHLLQQLESNLAELRGGSDYA 99
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 446808193  94 AGQINIGMGASISRSLMPAVISrfhQQHPQVKVRIMEGQLVSMINELRQGELDFTINTY----YQGPYDHEFTFEKLL 167
Cdd:PRK10082 100 QRKIKIAAAHSLSLGLLPSIIS---QMPPLFTWAIEAIDVDEAVDKLREGQSDCIFSFHdedlLEAPFDHIRLFESQL 174
PBP2_GltC_like cd08434
The substrate binding domain of LysR-type transcriptional regulator GltC, which activates gltA ...
104-284 1.17e-12

The substrate binding domain of LysR-type transcriptional regulator GltC, which activates gltA expression of glutamate synthase operon, contains type 2 periplasmic binding fold; GltC, a member of the LysR family of bacterial transcriptional factors, activates the expression of gltA gene of glutamate synthase operon and is essential for cell growth in the absence of glutamate. Glutamate synthase is a heterodimeric protein that encoded by gltA and gltB, whose expression is subject to nutritional regulation. GltC also negatively auto-regulates its own expression. This substrate-binding domain has strong homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176125 [Multi-domain]  Cd Length: 195  Bit Score: 65.25  E-value: 1.17e-12
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 104 SISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYqgPYDHEFTFEKLLEKQFAIFCRPGHPAIG 183
Cdd:cd08434    9 SLGTSLVPDLIRAFRKEYPNVTFELHQGSTDELLDDLKNGELDLALCSPV--PDEPDIEWIPLFTEELVLVVPKDHPLAG 86
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 184 ARSI--KQLLDYSWTMpTPHGSYYKHL-SELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEmgcDPLHGQGLVM 260
Cdd:cd08434   87 RDSVdlAELADEPFVL-LSPGFGLRPIvDELCAAAGFTPKIAFEGEEDSTIAGLVAAGLGVAILPEM---TLLNPPGVKK 162
                        170       180
                 ....*....|....*....|....
gi 446808193 261 LPVSEILPKATYYLIQRRDSRQTP 284
Cdd:cd08434  163 IPIKDPDAERTIGLAWLKDRYLSP 186
PRK14997 PRK14997
LysR family transcriptional regulator; Provisional
13-128 1.64e-12

LysR family transcriptional regulator; Provisional


Pssm-ID: 184959 [Multi-domain]  Cd Length: 301  Bit Score: 66.55  E-value: 1.64e-12
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  13 FVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQRQGQ 92
Cdd:PRK14997  10 FVHVVEEGGFAAAGRALDEPKSKLSRRIAQLEERLGVRLIQRTTRQFNVTEVGQTFYEHCKAMLVEAQAAQDAIAALQVE 89
                         90       100       110
                 ....*....|....*....|....*....|....*.
gi 446808193  93 LAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRI 128
Cdd:PRK14997  90 PRGIVKLTCPVTLLHVHIGPMLAKFMARYPDVSLQL 125
PRK12680 PRK12680
LysR family transcriptional regulator;
9-149 1.53e-11

LysR family transcriptional regulator;


Pssm-ID: 183677 [Multi-domain]  Cd Length: 327  Bit Score: 63.87  E-value: 1.53e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVA-RQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGV-TLTDAGESFYQHASLILEE---LRA-A 82
Cdd:PRK12680   5 QLRYLVAIAdAELNITLAAARVHATQPGLSKQLKQLEDELGFLLFVRKGRSLeSVTPAGVEVIERARAVLSEannIRTyA 84
                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 446808193  83 QEDIRQRQGQLAgqinIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTI 149
Cdd:PRK12680  85 ANQRRESQGQLT----LTTTHTQARFVLPPAVAQIKQAYPQVSVHLQQAAESAALDLLGQGDADIAI 147
PRK15421 PRK15421
HTH-type transcriptional regulator MetR;
5-300 1.70e-11

HTH-type transcriptional regulator MetR;


Pssm-ID: 185319 [Multi-domain]  Cd Length: 317  Bit Score: 63.88  E-value: 1.70e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   5 VKIHQIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQE 84
Cdd:PRK15421   2 IEVKHLKTLQALRNCGSLAAAAATLHQTQSALSHQFSDLEQRLGFRLFVRKSQPLRFTPQGEILLQLANQVLPQISQALQ 81
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  85 DIRQRQgQLAGQINIGMGASIsRSLMPAvISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINT--------YYQGP 156
Cdd:PRK15421  82 ACNEPQ-QTRLRIAIECHSCI-QWLTPA-LENFHKNWPQVEMDFKSGVTFDPQPALQQGELDLVMTSdilprsglHYSPM 158
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 157 YDHEFTfekllekqfaIFCRPGHPAIGARSI-------KQLLDYswtmPTPHG--SYYKHlseLLDDQAQTPQVGVVCET 227
Cdd:PRK15421 159 FDYEVR----------LVLAPDHPLAAKTRItpedlasETLLIY----PVQRSrlDVWRH---FLQPAGVSPSLKSVDNT 221
                        250       260       270       280       290       300       310
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 446808193 228 FsACISLVAKSDFLSILPEEMgCDPLHGQGLVML-PVSEILPKATYYLIQRRDSRQtPLTASLITQFRRE-CGYL 300
Cdd:PRK15421 222 L-LLIQMVAARMGIAALPHWV-VESFERQGLVVTkTLGEGLWSRLYAAVRDGEQRQ-PVTEAFIRSARNHaCDHL 293
PBP2_PAO1_like cd08412
The C-terminal substrate-binding domain of putative LysR-type transcriptional regulator ...
96-293 4.48e-11

The C-terminal substrate-binding domain of putative LysR-type transcriptional regulator PAO1-like, a member of the type 2 periplasmic binding fold protein superfamily; This family includes the C-terminal substrate domain of a putative LysR-type transcriptional regulator from the plant pathogen Pseudomonas aeruginosa PAO1and its closely related homologs. The LysR-type transcriptional regulators (LTTRs) are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of N2 fixing bacteria, and synthesis of virulence factors, to a name a few. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis. Besides transport proteins, the PBP2 superfamily includes the substrate-binding domains from ionotropic glutamate receptors, LysR-like transcriptional regulators, and unorthodox sensor proteins involved in signal transduction.


Pssm-ID: 176104 [Multi-domain]  Cd Length: 198  Bit Score: 61.02  E-value: 4.48e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTInTYYQGpYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08412    1 TLRIGCFSTLAPYYLPGLLRRFREAYPGVEVRVVEGNQEELEEGLRSGELDLAL-TYDLD-LPEDIAFEPLARLPPYVWL 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGAR--SIKQLLDYSWTMPT-PHGSYYkhLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPeEMGCDP 252
Cdd:cd08412   79 PADHPLAGKDevSLADLAAEPLILLDlPHSREY--FLSLFAAAGLTPRIAYRTSSFEAVRSLVANGLGYSLLN-DRPYRP 155
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|...
gi 446808193 253 --LHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQF 293
Cdd:cd08412  156 wsYDGKRLVRRPLADPVPPLRLGLAWRRGARLTRAARAFVDFA 198
PRK10086 PRK10086
DNA-binding transcriptional regulator DsdC;
13-177 5.51e-11

DNA-binding transcriptional regulator DsdC;


Pssm-ID: 182231 [Multi-domain]  Cd Length: 311  Bit Score: 62.33  E-value: 5.51e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  13 FVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELraAQEDIRQRQGQ 92
Cdd:PRK10086  22 FEVAARHQSFALAADELSLTPSAVSHRINQLEEELGIKLFVRSHRKVELTEEGKRVFWALKSSLDTL--NQEILDIKNQE 99
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  93 LAGQINIGMGASISRS-LMPAvISRFHQQHPQVKVRIMEGQlvSMINeLRQGELDFTIntYYQGPYDHEFTFEKLLEKQF 171
Cdd:PRK10086 100 LSGTLTVYSRPSIAQCwLVPR-LADFTRRYPSISLTILTGN--ENVN-FQRAGIDLAI--YFDDAPSAQLTHHFLMDEEI 173

                 ....*.
gi 446808193 172 AIFCRP 177
Cdd:PRK10086 174 LPVCSP 179
PRK11013 PRK11013
DNA-binding transcriptional regulator LysR; Provisional
9-128 5.64e-11

DNA-binding transcriptional regulator LysR; Provisional


Pssm-ID: 236819 [Multi-domain]  Cd Length: 309  Bit Score: 62.32  E-value: 5.64e-11
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFY---QHASLILEELRAAQED 85
Cdd:PRK11013   8 HIEIFHAVMTAGSLTEAARLLHTSQPTVSRELARFEKVIGLKLFERVRGRLHPTVQGLRLFeevQRSYYGLDRIVSAAES 87
                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 446808193  86 IRQ-RQGQLAgqinIGMGASISRSLMPAVISRFHQQHPQVKVRI 128
Cdd:PRK11013  88 LREfRQGQLS----IACLPVFSQSLLPGLCQPFLARYPDVSLNI 127
PBP2_Chlorocatechol cd08446
The C-terminal substrate binding domain of LysR-type transcriptional regulators involved in ...
95-289 3.31e-10

The C-terminal substrate binding domain of LysR-type transcriptional regulators involved in the chlorocatechol catabolism, contains the type 2 periplasmic binding fold; This CD includes the substrate binding domain of LysR-type regulators CbnR, ClcR and TfdR, which are involved in the regulation of chlorocatechol breakdown. The chlorocatechol-degradative pathway is often found in bacteria that can use chlorinated aromatic compounds as carbon and energy sources. CbnR is found in the 3-chlorobenzoate degradative bacterium Ralstonia eutropha NH9 and forms a tetramer. CbnR activates the expression of the cbnABCD genes, which are responsible for the degradation of chlorocatechol converted from 3-chlorobenzoate and are transcribed divergently from cbnR. In soil bacterium Pseudomonas putida, the 3-chlorocatechol-degradative pathway is encoded by clcABD operon, which requires the divergently transcribed clcR for activation. TfdR is involved in the activation of tfdA and tfdB gene expression. These genes encode enzymes for the conversion of 2,4-dichlorophenoxyacetic acid and 2,4-dichlorophenol. The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176137 [Multi-domain]  Cd Length: 198  Bit Score: 58.45  E-value: 3.31e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  95 GQINIG-MGASISRSLmPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYqgPYDHEFTFEKLLEKQFAI 173
Cdd:cd08446    1 GELDVGyFGSAILDTV-PRLLRAFLTARPDVTVSLHNMTKDEQIEALRAGRIHIGFGRFY--PVEPDIAVENVAQERLYL 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 174 FCRPGHP--AIGARSIKQLLDYSWTMP--TPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMG 249
Cdd:cd08446   78 AVPKSHPlaARPAVSLADLRNEPLILFprGGRPSFADEVLGLFRRAGVEPRVAQEVEDVVAALALVAAGFGVCIVPESVA 157
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|
gi 446808193 250 CdpLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASL 289
Cdd:cd08446  158 A--LRWPGVVFRPLADAEAKVPLSCIYRKDDRSPILRAFL 195
PRK03601 PRK03601
HTH-type transcriptional regulator HdfR;
13-179 4.53e-10

HTH-type transcriptional regulator HdfR;


Pssm-ID: 235137 [Multi-domain]  Cd Length: 275  Bit Score: 59.26  E-value: 4.53e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  13 FVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHA-SLILEELRAAQEDIRQRQG 91
Cdd:PRK03601   9 FLEVSRTRHFGRAAESLYLTQSAVSFRIRQLENQLGVNLFTRHRNNIRLTAAGERLLPYAeTLMNTWQAAKKEVAHTSQH 88
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  92 QlagQINIGMGASISRSLMPAVISRFHQQHP--QVKVRIMEGQlvSMINELRQGELDFTINTyyQGPYDHEFTFEKLLEK 169
Cdd:PRK03601  89 N---ELSIGASASLWECMLTPWLGRLYQNQEalQFEARIAQRQ--SLVKQLHERQLDLLITT--EAPKMDEFSSQLLGHF 161
                        170
                 ....*....|
gi 446808193 170 QFAIFCRPGH 179
Cdd:PRK03601 162 TLALYTSAPS 171
PBP2_PnbR cd08469
The C-terminal substrate binding domain of LysR-type transcriptional regulator PnbR, which is ...
99-245 4.76e-10

The C-terminal substrate binding domain of LysR-type transcriptional regulator PnbR, which is involved in regulating the pnb genes encoding enzymes for 4-nitrobenzoate catabolism, contains the type 2 periplasmic binding fold; PnbR is the regulator of one or both of the two pnb genes that encoding enzymes for 4-nitrobenzoate catabolism. In Pseudomonas putida strain, pnbA encodes a 4-nitrobenzoate reductase, which is responsible for catalyzing the direct reduction of 4-nitrobenzoate to 4-hydroxylaminobenzoate, and pnbB encodes a 4-hydroxylaminobenzoate lyase, which catalyzes the conversion of 4-hydroxylaminobenzoate to 3, 4-dihydroxybenzoic acid and ammonium. The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176158  Cd Length: 221  Bit Score: 58.57  E-value: 4.76e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  99 IGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPydHEFTFEKLLEKQFAIFCRPG 178
Cdd:cd08469    4 IAANDYVTAVLLPALVRRLETEAPGIDLRIRPVTRLDLAEQLDLGRIDLVIGIFEQIP--PRFRRRTLFDEDEVWVMRKD 81
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 179 HPAI-GARSIKQLLDYswtmptPH-------------GSYYKH--------------LSELLDDQAQTPQVGVVCETFSA 230
Cdd:cd08469   82 HPAArGALTIETLARY------PHivvslggeeegavSGFISErglarqtemfdrraLEEAFRESGLVPRVAVTVPHALA 155
                        170
                 ....*....|....*
gi 446808193 231 CISLVAKSDFLSILP 245
Cdd:cd08469  156 VPPLLADSDMLALLP 170
PBP2_XapR cd08449
The C-terminal substrate binding domain of LysR-type transcriptional regulator XapR involved ...
96-291 5.64e-10

The C-terminal substrate binding domain of LysR-type transcriptional regulator XapR involved in xanthosine catabolism, contains the type 2 periplasmic binding fold; In Escherichia coli, XapR is a positive regulator for the expression of xapA gene, encoding xanthosine phosphorylase, and xapB gene, encoding a polypeptide similar to the nucleotide transport protein NupG. As an operon, the expression of both xapA and xapB is fully dependent on the presence of both XapR and the inducer xanthosine. Expression of the xapR is constitutive but not auto-regulated, unlike many other LysR family proteins. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176140 [Multi-domain]  Cd Length: 197  Bit Score: 57.67  E-value: 5.64e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08449    1 HLNIGMVGSVLWGGLGPALRRFKRQYPNVTVRFHELSPEAQKAALLSKRIDLGFVRFADTLNDPPLASELLWREPMVVAL 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 176 RPGHPAIGARS--IKQLLDYSWTMPTPHGS-YYKHLSELLDDQAQTPQVGV-VCETfSACISLVAKSDFLSILPEEMGcd 251
Cdd:cd08449   81 PEEHPLAGRKSltLADLRDEPFVFLRLANSrFADFLINCCLQAGFTPQITQeVVEP-QTLMALVAAGFGVALVPESYA-- 157
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|
gi 446808193 252 PLHGQGLVMLPVSEILPkATYYLIQRRDSrQTPLTASLIT 291
Cdd:cd08449  158 RLPWPGVRFIPLKQAIS-ADLYAVYHPDS-ATPVIQAFLA 195
PRK13348 PRK13348
HTH-type transcriptional regulator ArgP;
9-121 6.92e-10

HTH-type transcriptional regulator ArgP;


Pssm-ID: 237357 [Multi-domain]  Cd Length: 294  Bit Score: 58.83  E-value: 6.92e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFrRSKGVTLTDAGESFYQHasliLEELRAAQEDIRQ 88
Cdd:PRK13348   6 QLEALAAVVETGSFERAARRLHVTPSAVSQRIKALEESLGQPLLV-RGRPCRPTPAGQRLLRH----LRQVALLEADLLS 80
                         90       100       110
                 ....*....|....*....|....*....|....*..
gi 446808193  89 --RQGQLAGQ-INIGMGA-SISRSLMPAViSRFHQQH 121
Cdd:PRK13348  81 tlPAERGSPPtLAIAVNAdSLATWFLPAL-AAVLAGE 116
PBP2_OxyR cd08411
The C-terminal substrate-binding domain of the LysR-type transcriptional regulator OxyR, a ...
95-180 9.38e-10

The C-terminal substrate-binding domain of the LysR-type transcriptional regulator OxyR, a member of the type 2 periplasmic binding fold protein superfamily; OxyR senses hydrogen peroxide and is activated through the formation of an intramolecular disulfide bond. The OxyR activation induces the transcription of genes necessary for the bacterial defense against oxidative stress. The OxyR of LysR-type transcriptional regulator family is composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The C-terminal domain also contains the redox-active cysteines that mediate the redox-dependent conformational switch. Thus, the interaction between the OxyR-tetramer and DNA is notably different between the oxidized and reduced forms. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176103 [Multi-domain]  Cd Length: 200  Bit Score: 57.15  E-value: 9.38e-10
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  95 GQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYyqgPYDHE-FTFEKLLEKQFAI 173
Cdd:cd08411    1 GPLRLGVIPTIAPYLLPRLLPALRQAYPKLRLYLREDQTERLLEKLRSGELDAALLAL---PVDEPgLEEEPLFDEPFLL 77

                 ....*..
gi 446808193 174 FCRPGHP 180
Cdd:cd08411   78 AVPKDHP 84
PRK11074 PRK11074
putative DNA-binding transcriptional regulator; Provisional
16-130 1.17e-09

putative DNA-binding transcriptional regulator; Provisional


Pssm-ID: 182948 [Multi-domain]  Cd Length: 300  Bit Score: 58.03  E-value: 1.17e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  16 VARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELraaqEDIRQRQGQLA- 94
Cdd:PRK11074  13 VARTGSFSAAAQELHRVPSAVSYTVRQLEEWLAVPLFERRHRDVELTPAGEWFVKEARSVIKKM----QETRRQCQQVAn 88
                         90       100       110       120
                 ....*....|....*....|....*....|....*....|
gi 446808193  95 ---GQINIGMGASISRSLMPAVISRFHQQHPQVKVRI-ME 130
Cdd:PRK11074  89 gwrGQLSIAVDNIVRPDRTRQLIVDFYRHFDDVELIIrQE 128
cbl PRK12679
HTH-type transcriptional regulator Cbl;
1-149 2.05e-09

HTH-type transcriptional regulator Cbl;


Pssm-ID: 183676 [Multi-domain]  Cd Length: 316  Bit Score: 57.51  E-value: 2.05e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   1 MAFQvkihQIRAFVEVARQG-SIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVT-LTDAGESFYQHASLILEE 78
Cdd:PRK12679   1 MNFQ----QLKIIREAARQDyNLTEVANMLFTSQSGVSRHIRELEDELGIEIFIRRGKRLLgMTEPGKALLVIAERILNE 76
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 446808193  79 LRAAQEDIRQRQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTI 149
Cdd:PRK12679  77 ASNVRRLADLFTNDTSGVLTIATTHTQARYSLPEVIKAFRELFPEVRLELIQGTPQEIATLLQNGEADIGI 147
PBP2_CidR cd08438
The C-terminal substrate binding domain of LysR-like transcriptional regulator CidR, contains ...
96-265 3.87e-09

The C-terminal substrate binding domain of LysR-like transcriptional regulator CidR, contains the type 2 periplasmic binding fold; This CD includes the substrate binding domain of CidR which positively up-regulates the expression of cidABC operon in the presence of acetic acid produced by the metabolism of excess glucose. The CidR affects the control of murein hydrolase activity by enhancing cidABC expression in the presence of acetic acid. Thus, up-regulation of cidABC expression results in increased murein hydrolase activity. This substrate binding domain has significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176129 [Multi-domain]  Cd Length: 197  Bit Score: 55.26  E-value: 3.87e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYyqgPYDHE-FTFEKLLEKQFAIF 174
Cdd:cd08438    1 HLRLGLPPLGGSLLFAPLLAAFRQRYPNIELELVEYGGKKVEQAVLNGELDVGITVL---PVDEEeFDSQPLCNEPLVAV 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 175 CRPGHPAIGARSI--KQLLDYSWTMPTphGSYYkhLSELLDDQAQ----TPQvgVVCET--FSACISLVAKSDFLSILPE 246
Cdd:cd08438   78 LPRGHPLAGRKTVslADLADEPFILFN--EDFA--LHDRIIDACQqagfTPN--IAARSsqWDFIAELVAAGLGVALLPR 151
                        170
                 ....*....|....*....
gi 446808193 247 EMgCDPLHGQGLVMLPVSE 265
Cdd:cd08438  152 SI-AQRLDNAGVKVIPLTD 169
PBP2_DntR_NahR_LinR_like cd08459
The C-terminal substrate binding domain of LysR-type transcriptional regulators that are ...
109-249 4.22e-09

The C-terminal substrate binding domain of LysR-type transcriptional regulators that are involved in the catabolism of dinitrotoluene, naphthalene and gamma-hexachlorohexane; contains the type 2 periplasmic binding fold; This CD includes LysR-like bacterial transcriptional regulators, DntR, NahR, and LinR, which are involved in the degradation of aromatic compounds. The transcription of the genes encoding enzymes involved in such degradation is regulated and expression of these enzymes is enhanced by inducers, which are either an intermediate in the metabolic pathway or compounds to be degraded. DntR from Burkholderia species controls genes encoding enzymes for oxidative degradation of the nitro-aromatic compound 2,4-dinitrotoluene. The active form of DntR is homotetrameric, consisting of a dimer of dimers. NahR is a salicylate-dependent transcription activator of the nah and sal operons for naphthalene degradation. Salicylic acid is an intermediate of the oxidative degradation of the aromatic ring in soil bacteria. LinR positively regulates expression of the genes (linD and linE) encoding enzymes for gamma-hexachlorocyclohexane (a haloorganic insecticide) degradation. Expression of linD and linE are induced by their substrates, 2,5-dichlorohydroquinone (2,5-DCHQ) and chlorohydroquinone (CHQ). The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176148 [Multi-domain]  Cd Length: 201  Bit Score: 55.28  E-value: 4.22e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 109 LMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTInTYYQGPyDHEFTFEKLLEKQFAIFCRPGHPAIGAR-SI 187
Cdd:cd08459   14 FLPRLLAALREVAPGVRIETVRLPVDELEEALESGEIDLAI-GYLPDL-GAGFFQQRLFRERYVCLVRKDHPRIGSTlTL 91
                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 446808193 188 KQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMG 249
Cdd:cd08459   92 EQFLAARHVVVSASGTGHGLVEQALREAGIRRRIALRVPHFLALPLIVAQTDLVATVPERLA 153
PRK10632 PRK10632
HTH-type transcriptional activator AaeR;
13-131 7.86e-09

HTH-type transcriptional activator AaeR;


Pssm-ID: 182601 [Multi-domain]  Cd Length: 309  Bit Score: 55.92  E-value: 7.86e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  13 FVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRAAQEDIRQRQGQ 92
Cdd:PRK10632  10 FAKVVEFGSFTAAARQLQMSVSSISQTVSKLEDELQVKLLNRSTRSIGLTEAGRIYYQGCRRMLHEVQDVHEQLYAFNNT 89
                         90       100       110
                 ....*....|....*....|....*....|....*....
gi 446808193  93 LAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEG 131
Cdd:PRK10632  90 PIGTLRIGCSSTMAQNVLAGLTAKMLKEYPGLSVNLVTG 128
PBP2_YofA_SoxR_like cd08442
The C-terminal substrate binding domain of LysR-type transcriptional regulators, YofA and SoxR, ...
111-287 2.54e-08

The C-terminal substrate binding domain of LysR-type transcriptional regulators, YofA and SoxR, contains the type 2 periplasmic binding fold; YofA is a LysR-like transcriptional regulator of cell growth in Bacillus subtillis. YofA controls cell viability and the formation of constrictions during cell division. YofaA positively regulates expression of the cell division gene ftsW, and thus is essential for cell viability during stationary-phase growth of Bacillus substilis. YofA shows significant homology to SoxR from Arthrobacter sp. TE1826. SoxR is a negative regulator for the sarcosine oxidase gene soxA. Sarcosine oxidase catalyzes the oxidative demethylation of sarcosine, which is involved in the metabolism of creatine and choline. The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176133  Cd Length: 193  Bit Score: 52.99  E-value: 2.54e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 111 PAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDftiNTYYQGPYDH-EFTFEKLLEKQFAIFCRPGHPAIgaRSIKQ 189
Cdd:cd08442   16 PPLLAAYHARYPKVDLSLSTGTTGALIQAVLEGRLD---GAFVAGPVEHpRLEQEPVFQEELVLVSPKGHPPV--SRAED 90
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 190 LLDYswTMPT-PHGSYYKHLSE-LLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCDPLHGQGLVMLPVSEIL 267
Cdd:cd08442   91 LAGS--TLLAfRAGCSYRRRLEdWLAEEGVSPGKIMEFGSYHAILGCVAAGMGIALLPRSVLDSLQGRGSVSIHPLPEPF 168
                        170       180
                 ....*....|....*....|
gi 446808193 268 PKATYYLIQRRDSRQTPLTA 287
Cdd:cd08442  169 ADVTTWLVWRKDSFTAALQA 188
PBP2_BudR cd08451
The C-terminal substrate binding domain of LysR-type transcrptional regulator BudR, which is ...
96-285 4.06e-08

The C-terminal substrate binding domain of LysR-type transcrptional regulator BudR, which is responsible for activation of the expression of the butanediol operon genes; contains the type 2 periplasmic binding fold; This CD represents the substrate binding domain of BudR regulator, which is responsible for induction of the butanediol formation pathway under fermentative growth conditions. Three enzymes are involved in the production of 1 mol of 2,3 butanediol from the condensation of 2 mol of pyruvate with acetolactate and acetoin as intermediates: acetolactate synthetase, acetolactate decarboxylase, and acetoin reductase. In Klebsiella terrigena, BudR regulates the expression of the budABC operon genes, encoding these three enzymes of the butanediol pathway. In many bacterial species, the use of this pathway can prevent intracellular acidification by diverting metabolism from acid production to the formation of neutral compounds (acetoin and butanediol). This substrate-binding domain has significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176142 [Multi-domain]  Cd Length: 199  Bit Score: 52.57  E-value: 4.06e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASIS-RSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYyqgPYDH--EFTFEKLLEKQFA 172
Cdd:cd08451    1 RLRVGFTSSAAfHPLVPGLIRRFREAYPDVELTLEEANTAELLEALREGRLDAAFVRP---PVARsdGLVLELLLEEPML 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 173 IFCRPGHPAIGARSI--KQLLDYSWTM-PTPHG-SYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEM 248
Cdd:cd08451   78 VALPAGHPLARERSIplAALADEPFILfPRPVGpGLYDAIIAACRRAGFTPRIGQEAPQMASAINLVAAGLGVSIVPASM 157
                        170       180       190
                 ....*....|....*....|....*....|....*..
gi 446808193 249 GCdpLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPL 285
Cdd:cd08451  158 RQ--LQAPGVVYRPLAGAPLTAPLALAYRRGERSPAV 192
PBP2_CynR cd08425
The C-terminal substrate-binding domain of the LysR-type transcriptional regulator CynR, ...
95-283 9.78e-08

The C-terminal substrate-binding domain of the LysR-type transcriptional regulator CynR, contains the type 2 periplasmic binding fold; CynR is a LysR-like transcriptional regulator of the cyn operon, which encodes genes that allow cyanate to be used as a sole source of nitrogen. The operon includes three genes in the following order: cynT (cyanate permease), cynS (cyanase), and cynX (a protein of unknown function). CynR negatively regulates its own expression independently of cyanate. CynR binds to DNA and induces bending of DNA in the presence or absence of cyanate, but the amount of bending is decreased by cyanate. The CynR of LysR-type transcriptional regulator family is composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins (PBP2). The PBP2 are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176116  Cd Length: 197  Bit Score: 51.18  E-value: 9.78e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  95 GQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINtyYQGPYDHEFTFEKLLEKQFAIF 174
Cdd:cd08425    1 GSLRLAMTPTFTAYLIGPLIDRFHARYPGIALSLREMPQERIEAALADDRLDLGIA--FAPVRSPDIDAQPLFDERLALV 78
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 175 CRPGHPAIGARSI---KQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGcd 251
Cdd:cd08425   79 VGATHPLAQRRTAltlDDLAAEPLALLSPDFATRQHIDRYFQKQGIKPRIAIEANSISAVLEVVRRGRLATILPDAIA-- 156
                        170       180       190
                 ....*....|....*....|....*....|...
gi 446808193 252 plHGQ-GLVMLPVSEILPKATYYLIQRRDSRQT 283
Cdd:cd08425  157 --REQpGLCAVALEPPLPGRTAALLRRKGAYRS 187
PBP2_LysR_opines_like cd08415
The C-terminal substrate-domain of LysR-type transcriptional regulators involved in the ...
104-293 1.06e-07

The C-terminal substrate-domain of LysR-type transcriptional regulators involved in the catabolism of opines and that of related regulators, contains the type 2 periplasmic binding fold; This CD includes the C-terminal substrate-domain of LysR-type transcriptional regulators, OccR and NocR, involved in the catabolism of opines and that of LysR for lysine biosynthesis which clustered together in phylogenetic trees. Opines, such as octopine and nopaline, are low molecular weight compounds found in plant crown gall tumors that are produced by the parasitic bacterium Agrobacterium. There are at least 30 different opines identified so far. Opines are utilized by tumor-colonizing bacteria as a source of carbon, nitrogen, and energy. NocR and OccR belong to the family of LysR-type transcriptional regulators that positively regulates the catabolism of nopaline and octopine, respectively. Both nopaline and octopalin are arginine derivatives. In Agrobacterium tumefaciens, NocR regulates expression of the divergently transcribed nocB and nocR genes of the nopaline catabolism (noc) region. OccR protein activates the occQ operon of the Ti plasmid in response to octopine. This operon encodes proteins required for the uptake and catabolism of octopine. The occ operon also encodes the TraR protein, which is a quorum-sensing transcriptional regulator of the Ti plasmid tra regulon. LysR is the transcriptional activator of lysA gene encoding diaminopimelate decarboxylase, an enzyme that catalyses the decarboxylation of diaminopimelate to produce lysine. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176107 [Multi-domain]  Cd Length: 196  Bit Score: 51.02  E-value: 1.06e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 104 SISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYyqgPYDHE-FTFEKLLEKQFAIFCRPGHPAI 182
Cdd:cd08415    9 ALALSLLPRAIARFRARHPDVRISLHTLSSSTVVEAVLSGQADLGLASL---PLDHPgLESEPLASGRAVCVLPPGHPLA 85
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 183 GAR--SIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILpeemgcDPL-----HG 255
Cdd:cd08415   86 RKDvvTPADLAGEPLISLGRGDPLRQRVDAAFERAGVEPRIVIETQLSHTACALVAAGLGVAIV------DPLtaagyAG 159
                        170       180       190
                 ....*....|....*....|....*....|....*...
gi 446808193 256 QGLVMLPVSEILPkATYYLIQRRDSRQTPLTASLITQF 293
Cdd:cd08415  160 AGLVVRPFRPAIP-FEFALVRPAGRPLSRLAQAFIDLL 196
PRK03635 PRK03635
ArgP/LysG family DNA-binding transcriptional regulator;
9-144 1.70e-07

ArgP/LysG family DNA-binding transcriptional regulator;


Pssm-ID: 235144 [Multi-domain]  Cd Length: 294  Bit Score: 51.70  E-value: 1.70e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193   9 QIRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLaAQLFFRRSKGVTLTDAGESFYQHAslilEELRAAQEDIRQ 88
Cdd:PRK03635   6 QLEALAAVVREGSFERAAQKLHITQSAVSQRIKALEERV-GQVLLVRTQPCRPTEAGQRLLRHA----RQVRLLEAELLG 80
                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 446808193  89 RQGQLAGQ---INIGMGA-SISRSLMPAViSRFHQQHPqvkVR---IMEGQLVSmINELRQGE 144
Cdd:PRK03635  81 ELPALDGTpltLSIAVNAdSLATWFLPAL-APVLARSG---VLldlVVEDQDHT-AELLRRGE 138
PBP2_LTTR_like_2 cd08427
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
99-293 5.17e-07

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator, contains the type 2 periplasmic binding fold; LysR-transcriptional regulators comprise the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to a name a few. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176118 [Multi-domain]  Cd Length: 195  Bit Score: 49.11  E-value: 5.17e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  99 IGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLEKQFAIFCRPG 178
Cdd:cd08427    4 LGAIATVLTGLLPRALARLRRRHPDLEVHIVPGLSAELLARVDAGELDAAIVVEPPFPLPKDLVWTPLVREPLVLIAPAE 83
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 179 HPaigARSIKQLLdyswtMPTPHGSYYKHL--SELLDD--QAQTPQVGVVCE--TFSACISLVAKSDFLSILPEEMGcDP 252
Cdd:cd08427   84 LA---GDDPRELL-----ATQPFIRYDRSAwgGRLVDRflRRQGIRVREVMEldSLEAIAAMVAQGLGVAIVPDIAV-PL 154
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|.
gi 446808193 253 LHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQF 293
Cdd:cd08427  155 PAGPRVRVLPLGDPAFSRRVGLLWRRSSPRSRLIQALLEAL 195
PRK15092 PRK15092
DNA-binding transcriptional repressor LrhA; Provisional
10-159 9.70e-07

DNA-binding transcriptional repressor LrhA; Provisional


Pssm-ID: 237907 [Multi-domain]  Cd Length: 310  Bit Score: 49.26  E-value: 9.70e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  10 IRAFVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLIleeLRAAQED-IRQ 88
Cdd:PRK15092  16 LRTFVAVADLNTFAAAAAAVCRTQSAVSQQMQRLEQLVGKELFARHGRNKLLTEHGIQLLGYARKI---LRFNDEAcSSL 92
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 446808193  89 RQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQ--VKVRIMEGQLvsMINELRQGELDFTINTYYQGPYDH 159
Cdd:PRK15092  93 MYSNLQGVLTIGASDDTADTILPFLLNRVSSVYPKlaLDVRVKRNAF--MMEMLESQEVDLAVTTHRPSSFPA 163
PBP2_LeuO cd08466
The C-terminal substrate binding domain of LysR-type transcriptional regulator LeuO, an ...
98-275 2.97e-06

The C-terminal substrate binding domain of LysR-type transcriptional regulator LeuO, an activator of leucine synthesis operon, contains the type 2 periplasmic binding fold; LeuO, a LysR-type transcriptional regulator, was originally identified as an activator of the leucine synthesis operon (leuABCD). Subsequently, LeuO was found to be not a specific regulator of the leu gene but a global regulator of unrelated various genes. LeuO activates bglGFB (utilization of beta-D-glucoside) and represses cadCBA (lysine decarboxylation) and dsrA (encoding a regulatory small RNA for translational control of rpoS and hns). LeuO also regulates the yjjQ-bglJ operon which coding for a LuxR-type transcription factor. In Salmonella enterica serovar Typhi, LeuO is a positive regulator of ompS1 (encoding an outer membrane), ompS2 (encoding a pathogenicity determinant), and assT, while LeuO represses the expression of OmpX and Tpx. Both osmS1 and osmS2 influence virulence in the mouse model of Salmonella. In Vibrio cholerae, LeuO is involved in control of biofilm formation and in the stringent response. The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176155 [Multi-domain]  Cd Length: 200  Bit Score: 46.86  E-value: 2.97e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  98 NIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINtyYQGPYDHEFTFEKLLEKQFAIFCRP 177
Cdd:cd08466    3 NIAANETLDLLLLPRLLARLKQLAPNISLRESPSSEEDLFEDLRLQEVDLVID--YVPFRDPSFKSELLFEDELVCVARK 80
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 178 GHPAI-GARSIKQLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPE---EMGCDPL 253
Cdd:cd08466   81 DHPRIqGSLSLEQYLAEKHVVLSLRRGNLSALDLLTEEVLPQRNIAYEVSSLLSMLAVVSQTDLIAIAPRwlaDQYAEQL 160
                        170       180
                 ....*....|....*....|..
gi 446808193 254 hgqGLVMLPVSEILPKATYYLI 275
Cdd:cd08466  161 ---NLQILPLPFKTKPIPLYMV 179
PBP2_DntR_like_1 cd08460
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
108-263 3.04e-06

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator similar to DntR, which is involved in the catabolism of dinitrotoluene; contains the type 2 periplasmic binding fold; This CD includes an uncharacterized LysR-type transcriptional regulator similar to DntR, NahR, and LinR, which are involved in the degradation of aromatic compounds. The transcription of the genes encoding enzymes involved in such degradation is regulated and expression of these enzymes is enhanced by inducers, which are either an intermediate in the metabolic pathway or compounds to be degraded. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176149 [Multi-domain]  Cd Length: 200  Bit Score: 46.81  E-value: 3.04e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 108 SLMPAVISRFHQQHPQVKVR-IMEGQLVSMinELRQGELDFTINTyyQGPYDHEFTFEKLLEKQFAIFCRPGHP-AIGAR 185
Cdd:cd08460   13 AFGPALLAAVAAEAPGVRLRfVPESDKDVD--ALREGRIDLEIGV--LGPTGPEIRVQTLFRDRFVGVVRAGHPlARGPI 88
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 186 SIKQLLDYswtmptPH------GSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCDPLHGQGLV 259
Cdd:cd08460   89 TPERYAAA------PHvsvsrrGRLHGPIDDALAALGLTRRVVAVVPTFAAALFLARGSDLIALVPERVTAAARAGLGLR 162

                 ....
gi 446808193 260 MLPV 263
Cdd:cd08460  163 TFPL 166
PBP2_LTTR_like_3 cd08436
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
96-292 2.50e-05

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator, contains the type 2 periplasmic binding fold; LysR-transcriptional regulators comprise the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to a name a few. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176127 [Multi-domain]  Cd Length: 194  Bit Score: 44.13  E-value: 2.50e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTI----NTYYQGPYDHEFTFEKLlekqf 171
Cdd:cd08436    1 RLAIGTITSLAAVDLPELLARFHRRHPGVDIRLRQAGSDDLLAAVREGRLDLAFvglpERRPPGLASRELAREPL----- 75
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 172 AIFCRPGHPAIGARSI--KQLLDYSW-TMPTPHGsyykhLSELLDDQAQTPQVG--VVCET--FSACISLVAKSDFLSIL 244
Cdd:cd08436   76 VAVVAPDHPLAGRRRValADLADEPFvDFPPGTG-----ARRQVDRAFAAAGVRrrVAFEVsdVDLLLDLVARGLGVALL 150
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|....*...
gi 446808193 245 PEEMgcdPLHGQGLVMLPVSEiLPKATYYLIQRRDSRqTPLTASLITQ 292
Cdd:cd08436  151 PASV---AARLPGLAALPLEP-APRRRLYLAWSAPPP-SPAARAFLEL 193
PBP2_CysB_like cd08413
The C-terminal substrate domain of LysR-type transcriptional regulators CysB-like contains ...
107-151 7.65e-05

The C-terminal substrate domain of LysR-type transcriptional regulators CysB-like contains type 2 periplasmic binding fold; CysB is a transcriptional activator of genes involved in sulfate and thiosulfate transport, sulfate reduction, and cysteine synthesis. In Escherichia coli, the regulation of transcription in response to sulfur source is attributed to two transcriptional regulators, CysB and Cbl. CysB, in association with Cbl, downregulates the expression of ssuEADCB operon which is required for the utilization of sulfur from aliphatic sulfonates, in the presence of cysteine. Also, Cbl and CysB together directly function as transcriptional activators of tauABCD genes, which are required for utilization of taurine as sulfur source for growth. Like many other members of the LTTR family, CysB is composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis. Besides transport proteins, the PBP2 superfamily includes the substrate-binding domains from ionotropic glutamate receptors, LysR-like transcriptional regulators, and unorthodox sensor proteins involved in signal transduction.


Pssm-ID: 176105 [Multi-domain]  Cd Length: 198  Bit Score: 42.99  E-value: 7.65e-05
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*...
gi 446808193 107 RSLMPAVISRFHQQHPQVKVRIMEG---QLVSMineLRQGELDFTINT 151
Cdd:cd08413   12 RYVLPPVIAAFRKRYPKVKLSLHQGtpsQIAEM---VLKGEADIAIAT 56
PBP2_MleR cd08437
The substrate binding domain of LysR-type transcriptional regulator MleR which required for ...
96-208 2.50e-04

The substrate binding domain of LysR-type transcriptional regulator MleR which required for malolactic fermentation, contains type 2 periplasmic binidning fold; MleR, a transcription activator of malolactic fermentation system, is found in gram-positive bacteria and belongs to the lysR family of bacterial transcriptional regulators. The mleR gene is required for the expression and induction of malolactic fermentation. This substrate binding domain has significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176128  Cd Length: 198  Bit Score: 41.16  E-value: 2.50e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08437    1 KLRFGLPPIIGNYYFPKLAKDLIKTGLMIQIDTYEGGSAELLEQLLQGDLDIALLGSLTPLENSALHSKIIKTQHFMIIV 80
                         90       100       110
                 ....*....|....*....|....*....|....*
gi 446808193 176 RPGHPAIGARSI--KQLLDYSWTMPtphGSYYKHL 208
Cdd:cd08437   81 SKDHPLAKAKKVnfADLKKENFILL---NEHFVHP 112
PBP2_DntR_like_3 cd08461
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
107-248 5.29e-04

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator similar to DntR, which is involved in the catabolism of dinitrotoluene; contains the type 2 periplasmic binding fold; This CD includes an uncharacterized LysR-type transcriptional regulator similar to DntR, NahR, and LinR, which are involved in the degradation of aromatic compounds. The transcription of the genes encoding enzymes involved in such degradation is regulated and expression of these enzymes is enhanced by inducers, which are either an intermediate in the metabolic pathway or compounds to be degraded. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176150 [Multi-domain]  Cd Length: 198  Bit Score: 40.34  E-value: 5.29e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 107 RSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTyyqgpydHEFT-----FEKLLEKQFAIFCRPGHPA 181
Cdd:cd08461   12 KAILPPLLAALRQEAPGVRVAIRDLESDNLEAQLERGEVDLALTT-------PEYApdglrSRPLFEERYVCVTRRGHPL 84
                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 446808193 182 IGAR-SIKQLLDYSWTMPTPH-GSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEM 248
Cdd:cd08461   85 LQGPlSLDQFCALDHIVVSPSgGGFAGSTDEALAALGLTRNVVLSVPSFLVVPEILAATDMVAFVPSRL 153
nhaR PRK11062
transcriptional activator NhaR; Provisional
13-146 6.76e-04

transcriptional activator NhaR; Provisional


Pssm-ID: 182938 [Multi-domain]  Cd Length: 296  Bit Score: 40.76  E-value: 6.76e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  13 FVEVARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHA----SLILEELraaqeDIRQ 88
Cdd:PRK11062  12 FWMVCKEGSVVGAAEALFLTPQTITGQIKALEERLQGKLFKRKGRGLEPTELGELVFRYAdkmfTLSQEML-----DIVN 86
                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 446808193  89 RQGQLAGQINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELD 146
Cdd:PRK11062  87 YRKESNLLFDVGVADALSKRLVSRVLLTAVPEDESIHLRCFESTHEMLLEQLSQHKLD 144
PBP2_CbbR_RubisCO_like cd08419
The C-terminal substrate binding of LysR-type transcriptional regulator (CbbR) of RubisCO ...
96-197 7.46e-04

The C-terminal substrate binding of LysR-type transcriptional regulator (CbbR) of RubisCO operon, which is involved in the carbon dioxide fixation, contains the type 2 periplasmic binding fold; CbbR, a LysR-type transcriptional regulator, is required to activate expression of RubisCO, one of two unique enzymes in the Calvin-Benson-Bassham (CBB) cycle pathway. All plants, cyanobacteria, and many autotrophic bacteria use the CBB cycle to fix carbon dioxide. Thus, this cycle plays an essential role in assimilating CO2 into organic carbon on earth. The key CBB cycle enzyme is ribulose 1,5-bisphosphate carboxylase/oxygenase (RubisCO), which catalyzes the actual CO2 fixation reaction. The CO2 concentration affects the expression of RubisCO genes. It has also shown that NADPH enhances the DNA-binding ability of the CbbR. RubisCO is composed of eight large (CbbL) and eight small subunits (CbbS). The topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176111  Cd Length: 197  Bit Score: 39.80  E-value: 7.46e-04
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMgASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTyyQGPYDHEFTFEKLLEKQFAIFC 175
Cdd:cd08419    1 RLRLAV-VSTAKYFAPRLLGAFCRRHPGVEVSLRVGNREQVLERLADNEDDLAIMG--RPPEDLDLVAEPFLDNPLVVIA 77
                         90       100
                 ....*....|....*....|....
gi 446808193 176 RPGHPAIGARSI--KQLLDYSWTM 197
Cdd:cd08419   78 PPDHPLAGQKRIplERLAREPFLL 101
PBP2_LTTR_like_1 cd08421
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
103-292 2.27e-03

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator, contains the type 2 periplasmic binding fold; LysR-transcriptional regulators comprise the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to a name a few. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176113  Cd Length: 198  Bit Score: 38.27  E-value: 2.27e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 103 ASISRSLmPAVISRFHQQHPQVKVRIMEgqLVSM--INELRQGELDFTI---NTYYQG----PYDHEftfekllekQFAI 173
Cdd:cd08421    9 SAIVEFL-PEDLASFLAAHPDVRIDLEE--RLSAdiVRAVAEGRADLGIvagNVDAAGletrPYRTD---------RLVV 76
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193 174 FCRPGHPAIGARSIK--QLLDYSWTMPTPHGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEMGCD 251
Cdd:cd08421   77 VVPRDHPLAGRASVAfaDTLDHDFVGLPAGSALHTFLREAAARLGRRLRLRVQVSSFDAVCRMVAAGLGIGIVPESAARR 156
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|.
gi 446808193 252 PLHGQGLVMLPVSEILPKATYYLIQRRDSRQTPLTASLITQ 292
Cdd:cd08421  157 YARALGLRVVPLDDAWARRRLLLCVRSFDALPPAARALVDH 197
ModE COG2005
DNA-binding transcriptional regulator ModE (molybdenum-dependent) [Transcription];
16-88 5.53e-03

DNA-binding transcriptional regulator ModE (molybdenum-dependent) [Transcription];


Pssm-ID: 441608 [Multi-domain]  Cd Length: 118  Bit Score: 35.95  E-value: 5.53e-03
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 446808193  16 VARQGSIRGASRMLNMSQPALSKSIQELEEGLAAQLFFRRSKGV-----TLTDAGESfyqhaslILEELRAAQEDIRQ 88
Cdd:COG2005   30 IDETGSISAAAKAMGMSYKRAWDLIDAMNNLLGEPLVERQTGGKggggaRLTPEGRR-------LLALYRRLEAEAQR 100
PBP2_HcaR cd08450
The C-terminal substrate binding domain of LysR-type transcriptional regulator HcaR in ...
96-248 6.59e-03

The C-terminal substrate binding domain of LysR-type transcriptional regulator HcaR in involved in 3-phenylpropionic acid catabolism, contains the type2 periplasmic binding fold; HcaR, a member of the LysR family of transcriptional regulators, controls the expression of the hcA1, A2, B, C, and D operon, encoding for the 3-phenylpropionate dioxygenase complex and 3-phenylpropionate-2',3'-dihydrodiol dehydrogenase, that oxidizes 3-phenylpropionate to 3-(2,3-dihydroxyphenyl) propionate. Dioxygenases play an important role in protecting the cell against the toxic effects of dioxygen. The expression of hcaR is negatively auto-regulated, as for other members of the LysR family, and is strongly repressed in the presence of glucose. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176141 [Multi-domain]  Cd Length: 196  Bit Score: 36.97  E-value: 6.59e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446808193  96 QINIGMGASISRSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDftINTYYQGPYDHEFTFeKLLEKQFAIFC 175
Cdd:cd08450    1 VLTIGFLPGAEVQWLPEVLPILREEHPDLDVELSSLFSPQLAEALMRGKLD--VAFMRPEIQSDGIDY-QLLLKEPLIVV 77
                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 446808193 176 RPG-HPAIGARSI--KQLLDYSWTMPTP-HGSYYKHLSELLDDQAQTPQVGVVCETFSACISLVAKSDFLSILPEEM 248
Cdd:cd08450   78 LPAdHRLAGREKIppQDLAGENFISPAPtAPVLQQVIENYAAQHNIQPNIIQEADNLLSAMSLVASTLGCALLPLYA 154
PBP2_CrgA_like_3 cd08472
The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional ...
95-146 7.51e-03

The C-terminal substrate binding domain of an uncharacterized LysR-type transcriptional regulator CrgA-like, contains the type 2 periplasmic binding fold; This CD represents the substrate binding domain of an uncharacterized LysR-type transcriptional regulator (LTTR) CrgA-like 3. The LTTRs are acting as both auto-repressors and activators of target promoters, controlling operons involved in a wide variety of cellular processes such as amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to name a few. In contrast to the tetrameric form of other LTTRs, CrgA from Neisseria meningitides assembles into an octameric ring, which can bind up to four 63-bp DNA oligonucleotides. Phylogenetic cluster analysis showed that the CrgA-like regulators form a subclass of the LTTRs that function as octamers. The CrgA is an auto-repressor of its own gene and activates the expression of the mdaB gene which coding for an NADPH-quinone reductase and that its action is increased by MBL (alpha-methylene-gamma-butyrolactone), an inducer of NADPH-quinone oxidoreductase. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176161  Cd Length: 202  Bit Score: 36.72  E-value: 7.51e-03
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*....
gi 446808193  95 GQINIGMGASISRS-LMPAvISRFHQQHPQVKVRIMEG-QLVSMINE-----LRQGELD 146
Cdd:cd08472    1 GRLRVDVPGSLARLlLIPA-LPDFLARYPDIELDLGVSdRPVDLIREgvdcvIRVGELA 58
MntR COG1321
Mn-dependent transcriptional regulator MntR, DtxR family [Transcription];
15-66 7.53e-03

Mn-dependent transcriptional regulator MntR, DtxR family [Transcription];


Pssm-ID: 440932 [Multi-domain]  Cd Length: 135  Bit Score: 35.95  E-value: 7.53e-03
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|...
gi 446808193  15 EVARQGSIrgaSRMLNMSQPALSKSIQELEE-GLAAQlffRRSKGVTLTDAGE 66
Cdd:COG1321   23 GPVRTSDI---AERLGVSPPSVTEMLKKLEEkGLVEY---EPYGGITLTEEGR 69
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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