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Conserved domains on  [gi|502670180|ref|WP_012906029|]
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CmpA/NrtA family ABC transporter substrate-binding protein [Citrobacter rodentium]

Protein Classification

CmpA/NrtA family ABC transporter substrate-binding protein( domain architecture ID 10596738)

CmpA/NrtA family ABC transporter substrate-binding protein functions as the initial receptor in the ABC transport of one of a variety of substrates, such as CmpA protein that binds bicarbonate and is involved in the active transport of bicarbonate; belongs to the type 2 periplasmic binding protein (PBP2) superfamily

CATH:  3.40.190.10
Gene Ontology:  GO:0140359|GO:0042626|GO:0055052
SCOP:  3000083
TCDB:  3.A.1

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
NMT1_2 pfam13379
NMT1-like family; This family is closely related to the pfam09084 family.
39-290 9.03e-117

NMT1-like family; This family is closely related to the pfam09084 family.


:

Pssm-ID: 463863  Cd Length: 254  Bit Score: 340.86  E-value: 9.03e-117
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180   39 DKPEQSTVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGLELGIASKPQP 118
Cdd:pfam13379   1 GAPEKTSLKLGFIPLTDAAPLIVAAEKGFFAKYGLTVELSKQASWAETRDALVAGELDAAHVLTPMPYLITLGIGGAKVP 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  119 MANLMTLNQNGQAITLSAELQAQGITDAPALKKKIAGEAPG--ALTFAHTFPTGTHAMWLYYWLASAEIHPFSDIRTVVV 196
Cdd:pfam13379  81 MIVLASLNLNGQAITLANKYADKGVRDAAALKDLVGAYKASgkPFKFAVTFPGSTHDLWLRYWLAAGGLDPDADVKLVVV 160
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  197 PPPQMVMNMRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVDQNPHTARALVSAVLDASRWID 276
Cdd:pfam13379 161 PPPQMVANLRAGNIDGFCVGEPWNARAVAEGIGVTAATTGELWKDHPEKVLGVRADWVDKNPNAARALVKALIEATRWLD 240
                         250
                  ....*....|....
gi 502670180  277 ASEANRRETAQILS 290
Cdd:pfam13379 241 AKPENRREAAKLLA 254
 
Name Accession Description Interval E-value
NMT1_2 pfam13379
NMT1-like family; This family is closely related to the pfam09084 family.
39-290 9.03e-117

NMT1-like family; This family is closely related to the pfam09084 family.


Pssm-ID: 463863  Cd Length: 254  Bit Score: 340.86  E-value: 9.03e-117
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180   39 DKPEQSTVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGLELGIASKPQP 118
Cdd:pfam13379   1 GAPEKTSLKLGFIPLTDAAPLIVAAEKGFFAKYGLTVELSKQASWAETRDALVAGELDAAHVLTPMPYLITLGIGGAKVP 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  119 MANLMTLNQNGQAITLSAELQAQGITDAPALKKKIAGEAPG--ALTFAHTFPTGTHAMWLYYWLASAEIHPFSDIRTVVV 196
Cdd:pfam13379  81 MIVLASLNLNGQAITLANKYADKGVRDAAALKDLVGAYKASgkPFKFAVTFPGSTHDLWLRYWLAAGGLDPDADVKLVVV 160
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  197 PPPQMVMNMRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVDQNPHTARALVSAVLDASRWID 276
Cdd:pfam13379 161 PPPQMVANLRAGNIDGFCVGEPWNARAVAEGIGVTAATTGELWKDHPEKVLGVRADWVDKNPNAARALVKALIEATRWLD 240
                         250
                  ....*....|....
gi 502670180  277 ASEANRRETAQILS 290
Cdd:pfam13379 241 AKPENRREAAKLLA 254
PBP2_NrtA_CpmA_like cd13553
Substrate binding domain of ABC-type nitrate/bicarbonate transporters, a member of the type 2 ...
45-271 1.25e-78

Substrate binding domain of ABC-type nitrate/bicarbonate transporters, a member of the type 2 periplasmic binding fold superfamily; This subfamily includes nitrate (NrtA) and bicarbonate (CmpA) receptors. These domains are found in eubacterial perisplamic-binding proteins that serve as initial receptors in the ABC transport of bicarbonate, nitrate, taurine, or a wide range of aliphatic sulfonates, while other closest homologs are involved in thiamine (vitamin B1) biosynthetic pathway and desulfurization (DszB). After binding their ligand with high affinity, they 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. These binding proteins belong to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.


Pssm-ID: 270271 [Multi-domain]  Cd Length: 212  Bit Score: 242.10  E-value: 1.25e-78
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  45 TVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGLElgiASKPQPMANLMT 124
Cdd:cd13553    1 TLRIGYLPITDHAPLLVAKEKGFFEKEGLDVELVKFPSWADLRDALAAGELDAAHVLAPMPAAAT---YGKGAPIKVVAG 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 125 LNQNGQAITLSAELQAQGITDapaLKKKiageapgalTFAHTFPTGTHAMWLYYWLASAEIHPFSDIRTVVVPPPQMVMN 204
Cdd:cd13553   78 LHRNGSAIVVSKDSGIKSVAD---LKGK---------TIAVPFPGSTHDVLLRYWLAAAGLDPGKDVEIVVLPPPDMVAA 145
                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 502670180 205 MRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVDQNPHTARALVSAVLDA 271
Cdd:cd13553  146 LAAGQIDAYCVGEPWNARAVAEGVGRVLADSGDIWPGHPCCVLVVREDFLEENPEAVQALLKALVEA 212
TauA COG0715
ABC-type nitrate/sulfonate/bicarbonate transport system, periplasmic component [Inorganic ion ...
18-357 3.10e-49

ABC-type nitrate/sulfonate/bicarbonate transport system, periplasmic component [Inorganic ion transport and metabolism];


Pssm-ID: 440479 [Multi-domain]  Cd Length: 297  Bit Score: 169.03  E-value: 3.10e-49
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  18 AVLGASCLLPGGLASVRAAgsdkpEQSTVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDA 97
Cdd:COG0715    1 LAALAALALAACSAAAAAA-----EKVTLRLGWLPNTDHAPLYVAKEKGYFKKEGLDVELVEFAGGAAALEALAAGQADF 75
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  98 AHILYGLLYGlelgIASKPQPMANLMTLNQ-NGQAITLSAELqaqGITDAPALK-KKIAgeapgaltfahTFPTGTHAMW 175
Cdd:COG0715   76 GVAGAPPALA----ARAKGAPVKAVAALSQsGGNALVVRKDS---GIKSLADLKgKKVA-----------VPGGSTSHYL 137
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 176 LYYWLASAEIHPfSDIRTVVVPPPQMVMNMRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVD 255
Cdd:COG0715  138 LRALLAKAGLDP-KDVEIVNLPPPDAVAALLAGQVDAAVVWEPFESQAEKKGGGRVLADSADLVPGYPGDVLVASEDFLE 216
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 256 QNPHTARALVSAVLDASRWIDaseANRRETAQILSRRAwlNTKEQYLTGRMLGEYDngagrrwqdahpmrffRDGEVSFP 335
Cdd:COG0715  217 ENPEAVKAFLRALLKAWAWAA---ANPDEAAAILAKAT--GLDPEVLAAALEGDLR----------------LDPPLGAP 275
                        330       340
                 ....*....|....*....|..
gi 502670180 336 WHSDGMWFLTQFRRWGLLNEAP 357
Cdd:COG0715  276 DPARLQRVADFLVELGLLPKDV 297
 
Name Accession Description Interval E-value
NMT1_2 pfam13379
NMT1-like family; This family is closely related to the pfam09084 family.
39-290 9.03e-117

NMT1-like family; This family is closely related to the pfam09084 family.


Pssm-ID: 463863  Cd Length: 254  Bit Score: 340.86  E-value: 9.03e-117
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180   39 DKPEQSTVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGLELGIASKPQP 118
Cdd:pfam13379   1 GAPEKTSLKLGFIPLTDAAPLIVAAEKGFFAKYGLTVELSKQASWAETRDALVAGELDAAHVLTPMPYLITLGIGGAKVP 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  119 MANLMTLNQNGQAITLSAELQAQGITDAPALKKKIAGEAPG--ALTFAHTFPTGTHAMWLYYWLASAEIHPFSDIRTVVV 196
Cdd:pfam13379  81 MIVLASLNLNGQAITLANKYADKGVRDAAALKDLVGAYKASgkPFKFAVTFPGSTHDLWLRYWLAAGGLDPDADVKLVVV 160
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  197 PPPQMVMNMRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVDQNPHTARALVSAVLDASRWID 276
Cdd:pfam13379 161 PPPQMVANLRAGNIDGFCVGEPWNARAVAEGIGVTAATTGELWKDHPEKVLGVRADWVDKNPNAARALVKALIEATRWLD 240
                         250
                  ....*....|....
gi 502670180  277 ASEANRRETAQILS 290
Cdd:pfam13379 241 AKPENRREAAKLLA 254
PBP2_NrtA_CpmA_like cd13553
Substrate binding domain of ABC-type nitrate/bicarbonate transporters, a member of the type 2 ...
45-271 1.25e-78

Substrate binding domain of ABC-type nitrate/bicarbonate transporters, a member of the type 2 periplasmic binding fold superfamily; This subfamily includes nitrate (NrtA) and bicarbonate (CmpA) receptors. These domains are found in eubacterial perisplamic-binding proteins that serve as initial receptors in the ABC transport of bicarbonate, nitrate, taurine, or a wide range of aliphatic sulfonates, while other closest homologs are involved in thiamine (vitamin B1) biosynthetic pathway and desulfurization (DszB). After binding their ligand with high affinity, they 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. These binding proteins belong to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.


Pssm-ID: 270271 [Multi-domain]  Cd Length: 212  Bit Score: 242.10  E-value: 1.25e-78
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  45 TVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGLElgiASKPQPMANLMT 124
Cdd:cd13553    1 TLRIGYLPITDHAPLLVAKEKGFFEKEGLDVELVKFPSWADLRDALAAGELDAAHVLAPMPAAAT---YGKGAPIKVVAG 77
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 125 LNQNGQAITLSAELQAQGITDapaLKKKiageapgalTFAHTFPTGTHAMWLYYWLASAEIHPFSDIRTVVVPPPQMVMN 204
Cdd:cd13553   78 LHRNGSAIVVSKDSGIKSVAD---LKGK---------TIAVPFPGSTHDVLLRYWLAAAGLDPGKDVEIVVLPPPDMVAA 145
                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 502670180 205 MRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVDQNPHTARALVSAVLDA 271
Cdd:cd13553  146 LAAGQIDAYCVGEPWNARAVAEGVGRVLADSGDIWPGHPCCVLVVREDFLEENPEAVQALLKALVEA 212
TauA COG0715
ABC-type nitrate/sulfonate/bicarbonate transport system, periplasmic component [Inorganic ion ...
18-357 3.10e-49

ABC-type nitrate/sulfonate/bicarbonate transport system, periplasmic component [Inorganic ion transport and metabolism];


Pssm-ID: 440479 [Multi-domain]  Cd Length: 297  Bit Score: 169.03  E-value: 3.10e-49
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  18 AVLGASCLLPGGLASVRAAgsdkpEQSTVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDA 97
Cdd:COG0715    1 LAALAALALAACSAAAAAA-----EKVTLRLGWLPNTDHAPLYVAKEKGYFKKEGLDVELVEFAGGAAALEALAAGQADF 75
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  98 AHILYGLLYGlelgIASKPQPMANLMTLNQ-NGQAITLSAELqaqGITDAPALK-KKIAgeapgaltfahTFPTGTHAMW 175
Cdd:COG0715   76 GVAGAPPALA----ARAKGAPVKAVAALSQsGGNALVVRKDS---GIKSLADLKgKKVA-----------VPGGSTSHYL 137
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 176 LYYWLASAEIHPfSDIRTVVVPPPQMVMNMRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWPDHPEKVLGTRRAWVD 255
Cdd:COG0715  138 LRALLAKAGLDP-KDVEIVNLPPPDAVAALLAGQVDAAVVWEPFESQAEKKGGGRVLADSADLVPGYPGDVLVASEDFLE 216
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 256 QNPHTARALVSAVLDASRWIDaseANRRETAQILSRRAwlNTKEQYLTGRMLGEYDngagrrwqdahpmrffRDGEVSFP 335
Cdd:COG0715  217 ENPEAVKAFLRALLKAWAWAA---ANPDEAAAILAKAT--GLDPEVLAAALEGDLR----------------LDPPLGAP 275
                        330       340
                 ....*....|....*....|..
gi 502670180 336 WHSDGMWFLTQFRRWGLLNEAP 357
Cdd:COG0715  276 DPARLQRVADFLVELGLLPKDV 297
PBP2_NrtA_SsuA_CpmA_like cd01008
Substrate binding domain of ABC-type nitrate/sulfonate/bicarbonate transporters, a member of ...
45-271 1.02e-27

Substrate binding domain of ABC-type nitrate/sulfonate/bicarbonate transporters, a member of the type 2 periplasmic binding fold superfamily; This family represents the periplasmic binding proteins involved in nitrate, alkanesulfonate, and bicarbonate transport. These domains are found in eubacterial perisplamic-binding proteins that serve as initial receptors in the ABC transport of bicarbonate, nitrate, taurine, or a wide range of aliphatic sulfonates. Other closest homologs involved in thiamine (vitamin B1) biosynthetic pathway and desulfurization (DszB) are also included in this family. After binding their ligand with high affinity, they 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. These binding proteins belong to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.


Pssm-ID: 270229 [Multi-domain]  Cd Length: 212  Bit Score: 108.91  E-value: 1.02e-27
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  45 TVRVGFIPLTDCAPVIIAALKGF--DKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGlelgIASKPQPMANL 122
Cdd:cd01008    1 TVRIGYQAGPLAGPLIVAKEKGLfeKEKEGIDVEWVEFTSGPPALEALAAGSLDFGTGGDTPALL----AAAGGVPVVLI 76
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 123 MTLNQ--NGQAITLSAELQAQGITDapaLK-KKIAgeapgaltfaHTFPTGTHaMWLYYWLASAEIhPFSDIRTVVVPPP 199
Cdd:cd01008   77 AALSRspNGNGIVVRKDSGITSLAD---LKgKKIA----------VTKGTTGH-FLLLKALAKAGL-SVDDVELVNLGPA 141
                        170       180       190       200       210       220       230
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 502670180 200 QMVMNMRIGNMSGFCVGEPWNARAINDRIGFTATTSQAIWpDHPEKVLGTRRAWVDQNPHTARALVSAVLDA 271
Cdd:cd01008  142 DAAAALASGDVDAWVTWEPFLSLAEKGGDARIIVDGGGLP-YTDPSVLVARRDFVEENPEAVKALLKALVEA 212
PBP2_ThiY_THI5_like_1 cd13652
Putative substrate binding domain of an ABC-type transporter similar to ThiY/THI5; the type 2 ...
43-271 1.57e-15

Putative substrate binding domain of an ABC-type transporter similar to ThiY/THI5; the type 2 periplasmic binding protein fold; This subfamily is phylogenetically similar to ThiY, which is the periplasmic N-formyl-4-amino-5-(aminomethyl)-2-methylpyrimidine (FAMP) binding component of the ABC transport system (ThiXYZ). FAMP is imported into cell by the transporter, where it is then incorporated into the thiamin biosynthetic pathway. The closest structural homologs of ThiY are THI5, which is responsible for the synthesis of 4-amino-5-(hydroxymethyl)-2-methylpyrimidine phosphate (HMP-P) in the thiamin biosynthetic pathway of eukaryotes, and periplasmic binding proteins involved in alkanesulfonate/nitrate and bicarbonate transport. After binding the ligand, they 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. The ThiY/THI5 proteins belong to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.


Pssm-ID: 270370 [Multi-domain]  Cd Length: 217  Bit Score: 75.12  E-value: 1.57e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  43 QSTVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHilygllyglelgiaskPQPMANL 122
Cdd:cd13652    1 TGKVKFGQIPISDFAPVYIAAEKGYFKEEGLDVEITRFASGAEILAALASGQVDVAG----------------SSPGASL 64
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 123 MTLNQNGQAITLSAELQAQ---------------GITDAPALK-KKIAGEAPGAltFAHTFptgthamwLYYWLASAEIH 186
Cdd:cd13652   65 LGALARGADLKIVAEGLGTtpgygpfaivvradsGITSPADLVgKKIAVSTLTN--ILEYT--------TNAYLKKNGLD 134
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 187 PfSDIRTVVVPPPQMVMNMRIGNMSGFCVGEPWNARAINdrIGFTATTSQAIWPD-HPEKVLGTRRAWVDQNPHTARALV 265
Cdd:cd13652  135 P-DKVEFVEVAFPQMVPALENGNVDAAVLAEPFLSRARS--SGAKVVASDYADPDpHSQATMVFSADFARENPEVVKKFL 211

                 ....*.
gi 502670180 266 SAVLDA 271
Cdd:cd13652  212 RAYLEA 217
Periplasmic_Binding_Protein_Type_2 cd00648
Type 2 periplasmic binding fold superfamily; This evolutionary model and hierarchy represent ...
45-251 4.57e-09

Type 2 periplasmic binding fold superfamily; This evolutionary model and hierarchy represent the ligand-binding domains found in solute binding proteins that serve as initial receptors in the transport, signal transduction and channel gating. The PBP2 proteins share the same architecture as periplasmic binding proteins type 1 (PBP1), but have a different topology. They are typically comprised of two globular subdomains connected by a flexible hinge and bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. The origin of PBP module can be traced across the distant phyla, including eukaryotes, archebacteria, and prokaryotes. The majority of PBP2 proteins are involved in the uptake of a variety of soluble substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. 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 family includes ionotropic glutamate receptors and unorthodox sensor proteins involved in signal transduction. The substrate binding domain of the LysR transcriptional regulators and the oligopeptide-like transport systems also contain the type 2 periplasmic binding fold and thus they are significantly homologous to that of the PBP2; however, these two families are grouped into a separate hierarchy of the PBP2 superfamily due to the large number of protein sequences.


Pssm-ID: 270214 [Multi-domain]  Cd Length: 196  Bit Score: 56.04  E-value: 4.57e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  45 TVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAHILYGLLYGLELGIAsKPQPMANLMT 124
Cdd:cd00648    1 TLTVASIGPPPYAGFAEDAAKQLAKETGIKVELVPGSSIGTLIEALAAGDADVAVGPIAPALEAAADKL-APGGLYIVPE 79
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 125 LNQNGQAItlsaelqaqgITDAPALKKKIAGEAPG-ALTFAHTFPTGTHAMWLYYWLASAEIhPFSDIRTVVVPPP-QMV 202
Cdd:cd00648   80 LYVGGYVL----------VVRKGSSIKGLLAVADLdGKRVGVGDPGSTAVRQARLALGAYGL-KKKDPEVVPVPGTsGAL 148
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|....*....
gi 502670180 203 MNMRIGNMSGFCVGEPWNARAINDRIGFTATTsQAIWPDHPEKVLGTRR 251
Cdd:cd00648  149 AAVANGAVDAAIVWVPAAERAQLGNVQLEVLP-DDLGPLVTTFGVAVRK 196
PBP2_DszB cd13554
Substrate binding domain of 2'-hydroxybiphenyl-2-sulfinate desulfinase, a member of the type 2 ...
170-288 6.88e-07

Substrate binding domain of 2'-hydroxybiphenyl-2-sulfinate desulfinase, a member of the type 2 periplasmic binding fold superfamily; This subfamily includes DszB, which converts 2'-hydroxybiphenyl-2-sulfinate to 2-hydroxybiphenyl and sulfinate at the rate-limiting step of the microbial dibenzothiophene desulfurization pathway. The overall fold of DszB is highly similar to those of periplasmic substrate-binding proteins that serve as initial receptors in the ABC transport of bicarbonate, nitrate, taurine, or a wide range of aliphatic sulfonates. After binding their ligand with high affinity, they 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. The DszB protein belongs to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.


Pssm-ID: 270272 [Multi-domain]  Cd Length: 246  Bit Score: 50.20  E-value: 6.88e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 170 GTHAMWLYYWLASAEIHPFSDIRTV--VVPPPQMVMNMRIGNMSGFCVGEPWNARAIND-RIGFTATTSQAIWPDHPeKV 246
Cdd:cd13554  113 AIRGSWLARALLHNLEIGGLDVEIVpiDSPGRGQAAALDSGDIDALASWLPWATTLQATgGARPLVDLGLVEGNSYY-ST 191
                         90       100       110       120
                 ....*....|....*....|....*....|....*....|..
gi 502670180 247 LGTRRAWVDQNPHTARALVSAVLDASRWIdasEANRRETAQI 288
Cdd:cd13554  192 WTVRSDFIEQNPEAVKALVEALVRAGDWI---QAHPEAVVII 230
PBP2_SsuA_like_6 cd13563
Putative substrate binding domain of sulfonate binding protein-like, a member of the type 2 ...
45-271 1.42e-05

Putative substrate binding domain of sulfonate binding protein-like, a member of the type 2 periplasmic binding protein fold; This subfamily includes the periplasmic component of putative ABC-type sulfonate transport system similar to SsuA. These domains are found in eubacterial SsuA proteins that serve as initial receptors in the ABC transport of bicarbonate, nitrate, taurine, or a wide range of aliphatic sulfonates, while other closest homologs are involved in thiamine (vitamin B1) biosynthetic pathway and desulfurization (DszB). After binding the ligand, SsuA interacts 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. The SsuA proteins belong to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.


Pssm-ID: 270281 [Multi-domain]  Cd Length: 208  Bit Score: 45.69  E-value: 1.42e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180  45 TVRVGFIPLTDCAPVIIAALKGFDKKYGITIVPTKEASWAAVRDKLLSGELDAAhilyGLLYGLELGIASKPQPMANLMT 124
Cdd:cd13563    1 PLKIGISTWPGYGPWYLADEKGFFKKEGLDVELVWFESYSDSMAALASGQIDAA----ATTLDDALAMAAKGVPVKIVLV 76
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 502670180 125 LNQNGQAITLSAELQAQGITDapaLK-KKIAGEAPgaltfahtfptGTHAMWLYYWLASAEIHpFSDIRTVVVPPPQMVM 203
Cdd:cd13563   77 LDNSNGADGIVAKPGIKSIAD---LKgKTVAVEEG-----------SVSHFLLLNALEKAGLT-EKDVKIVNMTAGDAGA 141
                        170       180       190       200       210       220       230
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 502670180 204 NMRIGNMSGFCVGEPW--NARAIND-RIGFTATTSQAIWPDhpekVLGTRRAWVDQNPHTARALVSAVLDA 271
Cdd:cd13563  142 AFIAGQVDAAVTWEPWlsNALKRGKgKVLVSSADTPGLIPD----VLVVREDFIKKNPEAVKAVVKAWFDA 208
 
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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