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Conserved domains on  [gi|446537436|ref|WP_000614782|]
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MULTISPECIES: plasmid partitioning protein RepB C-terminal domain-containing protein [Enterobacteriaceae]

Protein Classification

ParB/RepB/Spo0J family partition protein( domain architecture ID 11445144)

ParB/RepB/Spo0J family partition protein which may be involved in segregation and competition between plasmids and chromosomes such as the ParB/SpoJ-type DNA-binding component of the prokaryotic parABS partitioning system

CATH:  1.10.10.2830
Gene Ontology:  GO:0003677
PubMed:  16677298|17161598
SCOP:  4002475

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
RepB super family cl20337
RepB plasmid partitioning protein; This family includes proteins with sequence similarity to ...
97-270 1.38e-24

RepB plasmid partitioning protein; This family includes proteins with sequence similarity to the RepB partitioning protein of the large Ti (tumour-inducing) plasmids of Agrobacterium tumefaciens.


The actual alignment was detected with superfamily member pfam07506:

Pssm-ID: 311449  Cd Length: 185  Bit Score: 97.54  E-value: 1.38e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   97 QVNHINVVEEHRMIIKSLAK-VSIEKLSAALGISVDAIKDK--ANVMNGIDPSVIAKLSDKPIPKATFDILRKMKPIRQI 173
Cdd:pfam07506   1 ARADLSFIERARFAARLLERgVPRAEIAAALGLDPQTVSKMvaRAIPEGICPEEEALLKDVETGIAAFGLARKIGRDRWV 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  174 EAVGTMINFDNYSKKFAMSILDATPASMIVNKGKNTPYKKDIKKTILRLEQEMATTSEETKKLQTEYGSDMLKFVIIQSY 253
Cdd:pfam07506  81 ELAELLAAAKNVESAYFRALLADTRFSQLVKPLRPKRIKGVSGKSAARPEGKWARLQTAVLAIYEDEGRQTLHLKAAEGY 160
                         170
                  ....*....|....*..
gi 446537436  254 INKLLGNSKVLHWFLEN 270
Cdd:pfam07506 161 LDRLLFNTRFGRYLARN 177
Spo0J COG1475
Chromosome segregation protein Spo0J, contains ParB-like nuclease domain [Cell cycle control, ...
7-181 8.51e-16

Chromosome segregation protein Spo0J, contains ParB-like nuclease domain [Cell cycle control, cell division, chromosome partitioning];


:

Pssm-ID: 441084 [Multi-domain]  Cd Length: 241  Bit Score: 75.02  E-value: 8.51e-16
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   7 GDNFIYLETNKLIPSKElleNVKR---SHKYHQIVTSIESLGIIEPIIVFYDKDkDVTKILDGHLRVEALKDLGIEKAPC 83
Cdd:COG1475    4 GEEIREIPIDKIVPSPY---NPRRtfdEEALEELAASIREHGLLQPILVRPLGD-GRYEIIAGERRLRAAKLLGLETVPA 79
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  84 ILSSIDD------AFTPNKQVNHINVVEEHRMI--IKSLAKVSIEKLSAALGISVDAIKDKANVMNgIDPSVIAKLSDKP 155
Cdd:COG1475   80 IVRDLDDeealelALIENLQREDLNPLEEARAYqrLLEEFGLTQEEIAERLGKSRSEVSNLLRLLK-LPPEVQEALREGK 158
                        170       180
                 ....*....|....*....|....*..
gi 446537436 156 IPKATFDILRKMK-PIRQIEAVGTMIN 181
Cdd:COG1475  159 LSLGHARALAALSdPERQEELAEKIIE 185
 
Name Accession Description Interval E-value
RepB pfam07506
RepB plasmid partitioning protein; This family includes proteins with sequence similarity to ...
97-270 1.38e-24

RepB plasmid partitioning protein; This family includes proteins with sequence similarity to the RepB partitioning protein of the large Ti (tumour-inducing) plasmids of Agrobacterium tumefaciens.


Pssm-ID: 311449  Cd Length: 185  Bit Score: 97.54  E-value: 1.38e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   97 QVNHINVVEEHRMIIKSLAK-VSIEKLSAALGISVDAIKDK--ANVMNGIDPSVIAKLSDKPIPKATFDILRKMKPIRQI 173
Cdd:pfam07506   1 ARADLSFIERARFAARLLERgVPRAEIAAALGLDPQTVSKMvaRAIPEGICPEEEALLKDVETGIAAFGLARKIGRDRWV 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  174 EAVGTMINFDNYSKKFAMSILDATPASMIVNKGKNTPYKKDIKKTILRLEQEMATTSEETKKLQTEYGSDMLKFVIIQSY 253
Cdd:pfam07506  81 ELAELLAAAKNVESAYFRALLADTRFSQLVKPLRPKRIKGVSGKSAARPEGKWARLQTAVLAIYEDEGRQTLHLKAAEGY 160
                         170
                  ....*....|....*..
gi 446537436  254 INKLLGNSKVLHWFLEN 270
Cdd:pfam07506 161 LDRLLFNTRFGRYLARN 177
Spo0J COG1475
Chromosome segregation protein Spo0J, contains ParB-like nuclease domain [Cell cycle control, ...
7-181 8.51e-16

Chromosome segregation protein Spo0J, contains ParB-like nuclease domain [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 441084 [Multi-domain]  Cd Length: 241  Bit Score: 75.02  E-value: 8.51e-16
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   7 GDNFIYLETNKLIPSKElleNVKR---SHKYHQIVTSIESLGIIEPIIVFYDKDkDVTKILDGHLRVEALKDLGIEKAPC 83
Cdd:COG1475    4 GEEIREIPIDKIVPSPY---NPRRtfdEEALEELAASIREHGLLQPILVRPLGD-GRYEIIAGERRLRAAKLLGLETVPA 79
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  84 ILSSIDD------AFTPNKQVNHINVVEEHRMI--IKSLAKVSIEKLSAALGISVDAIKDKANVMNgIDPSVIAKLSDKP 155
Cdd:COG1475   80 IVRDLDDeealelALIENLQREDLNPLEEARAYqrLLEEFGLTQEEIAERLGKSRSEVSNLLRLLK-LPPEVQEALREGK 158
                        170       180
                 ....*....|....*....|....*..
gi 446537436 156 IPKATFDILRKMK-PIRQIEAVGTMIN 181
Cdd:COG1475  159 LSLGHARALAALSdPERQEELAEKIIE 185
ParB_Srx_like_nuclease cd16400
ParB/Srx_like nuclease and putative transcriptional regulators related to SbnI; This family ...
12-85 1.07e-08

ParB/Srx_like nuclease and putative transcriptional regulators related to SbnI; This family contains a Pyrococcus Furiosus enzyme reported to have DNA nuclease activity and resembles the N-terminal domain of ParB proteins of the parABS bacterial chromosome partitioning system. This sub-family also includes siderophore staphylobactin biosynthesis protein SbnI. 60% of the P. furiosus nuclease activity was retained at 90 degree C, suggesting a physiological role in the organism, which can grow in temperatures as high as 100 degrees Celsius. The protein has endo- and exo-nuclease activity vs. single- and double-stranded DNA, and nuclease activity was lost in methylated proteins prepared for structure solution. This family has a fairly well-conserved DGHHR motif that corresponds to the same structural position as the phosphorylation site (a portion of the ATP-Mg-binding site) of sulfiredoxin and the arginine-rich ParB BoxII of ParB.


Pssm-ID: 319257 [Multi-domain]  Cd Length: 72  Bit Score: 51.01  E-value: 1.07e-08
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 446537436  12 YLETNKLIPSKELLENvkrshKYHQIVTSIESLGI-IEPIIVfyDKDKDVtkILDGHLRVEALKDLGIEKAPCIL 85
Cdd:cd16400    1 LLPISDLRPHEEVDPD-----RVEELIEKILEEGVwTKPIIV--DKNTGI--ILDGHHRLEAAKRLGLKRVPCVL 66
ParB smart00470
ParB-like nuclease domain; Plasmid RK2 ParB preferentially cleaves single-stranded DNA. ParB ...
11-91 3.73e-07

ParB-like nuclease domain; Plasmid RK2 ParB preferentially cleaves single-stranded DNA. ParB also nicks supercoiled plasmid DNA preferably at sites with potential single-stranded character, like AT-rich regions and sequences that can form cruciform structures. ParB also exhibits 5-->3 exonuclease activity.


Pssm-ID: 214678 [Multi-domain]  Cd Length: 89  Bit Score: 47.30  E-value: 3.73e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436    11 IYLETNKLIPSKELLENVKRShKYHQIVTSIESLGIIEPIIVfyDKDKDVTKILDGHLRVEALKDLGIEKAPCILSSIDD 90
Cdd:smart00470   1 VEVPIEKLRPNPDQPRLTSEE-SLEELAESIKENGLLQPIIV--RPNDGRYEIIDGERRLRAAKLLGLKEVPVIVRDLDD 77

                   .
gi 446537436    91 A 91
Cdd:smart00470  78 E 78
parB_part TIGR00180
ParB/RepB/Spo0J family partition protein; This model represents the most well-conserved core ...
37-174 2.05e-05

ParB/RepB/Spo0J family partition protein; This model represents the most well-conserved core of a set of chromosomal and plasmid partition proteins related to ParB, including Spo0J, RepB, and SopB. Spo0J has been shown to bind a specific DNA sequence that, when introduced into a plasmid, can serve as partition site. Study of RepB, which has nicking-closing activity, suggests that it forms a transient protein-DNA covalent intermediate during the strand transfer reaction.


Pssm-ID: 272946 [Multi-domain]  Cd Length: 187  Bit Score: 44.29  E-value: 2.05e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   37 IVTSIESLGIIEPIIVF-YDKDKDVTKILDGHLRVEALKDLGIEKAPCILSSIDD------AFTPNKQVNHINVVEEHRM 109
Cdd:TIGR00180  32 LIESIKEQGQLQPILVRkHPDQPGRYEIIAGERRWRAAKLAGLKTIPAIVRELDDeqmladALIENIQREDLSPIEEAQA 111
                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 446537436  110 IIKSLAKVS--IEKLSAALGISVDAIkdkANVMNGID-PSVIAKLSDKPIPKATFDILRKMKPIRQIE 174
Cdd:TIGR00180 112 YKRLLEKFSmtQEDLAKKIGKSRAHI---TNLLRLLKlPSEIQSAIPEASGLLSSGHARLLLALKKKP 176
ParBc pfam02195
ParB/Sulfiredoxin domain; Proteins containing this domain include Escherichia coli plasmid ...
13-90 3.56e-05

ParB/Sulfiredoxin domain; Proteins containing this domain include Escherichia coli plasmid protein ParB and mammalian Sulfiredoxin-1. ParB is involved in chromosome partition. It localizes to both poles of the predivisional cell following completion of DNA replication. Sulfiredoxin-1 contributes to oxidative stress resistance by reducing cysteine-sulfinic acid formed under exposure to oxidants in the peroxiredoxins PRDX1, PRDX2, PRDX3 and PRDX4.


Pssm-ID: 426651 [Multi-domain]  Cd Length: 90  Bit Score: 41.50  E-value: 3.56e-05
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 446537436   13 LETNKLIPSKELLENVKrshkyhQIVTSIESLGIIEPIIVfyDKDKDVT-KILDGHLRVEALKDLGIEKAPCILSSIDD 90
Cdd:pfam02195   8 LRPNPDQPRKDSEESLE------ELAASIKKRGLLQPIIV--RKTPDGRyEIIAGERRLRAAKLLGLKEVPVIVREIDD 78
 
Name Accession Description Interval E-value
RepB pfam07506
RepB plasmid partitioning protein; This family includes proteins with sequence similarity to ...
97-270 1.38e-24

RepB plasmid partitioning protein; This family includes proteins with sequence similarity to the RepB partitioning protein of the large Ti (tumour-inducing) plasmids of Agrobacterium tumefaciens.


Pssm-ID: 311449  Cd Length: 185  Bit Score: 97.54  E-value: 1.38e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   97 QVNHINVVEEHRMIIKSLAK-VSIEKLSAALGISVDAIKDK--ANVMNGIDPSVIAKLSDKPIPKATFDILRKMKPIRQI 173
Cdd:pfam07506   1 ARADLSFIERARFAARLLERgVPRAEIAAALGLDPQTVSKMvaRAIPEGICPEEEALLKDVETGIAAFGLARKIGRDRWV 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  174 EAVGTMINFDNYSKKFAMSILDATPASMIVNKGKNTPYKKDIKKTILRLEQEMATTSEETKKLQTEYGSDMLKFVIIQSY 253
Cdd:pfam07506  81 ELAELLAAAKNVESAYFRALLADTRFSQLVKPLRPKRIKGVSGKSAARPEGKWARLQTAVLAIYEDEGRQTLHLKAAEGY 160
                         170
                  ....*....|....*..
gi 446537436  254 INKLLGNSKVLHWFLEN 270
Cdd:pfam07506 161 LDRLLFNTRFGRYLARN 177
Spo0J COG1475
Chromosome segregation protein Spo0J, contains ParB-like nuclease domain [Cell cycle control, ...
7-181 8.51e-16

Chromosome segregation protein Spo0J, contains ParB-like nuclease domain [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 441084 [Multi-domain]  Cd Length: 241  Bit Score: 75.02  E-value: 8.51e-16
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   7 GDNFIYLETNKLIPSKElleNVKR---SHKYHQIVTSIESLGIIEPIIVFYDKDkDVTKILDGHLRVEALKDLGIEKAPC 83
Cdd:COG1475    4 GEEIREIPIDKIVPSPY---NPRRtfdEEALEELAASIREHGLLQPILVRPLGD-GRYEIIAGERRLRAAKLLGLETVPA 79
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  84 ILSSIDD------AFTPNKQVNHINVVEEHRMI--IKSLAKVSIEKLSAALGISVDAIKDKANVMNgIDPSVIAKLSDKP 155
Cdd:COG1475   80 IVRDLDDeealelALIENLQREDLNPLEEARAYqrLLEEFGLTQEEIAERLGKSRSEVSNLLRLLK-LPPEVQEALREGK 158
                        170       180
                 ....*....|....*....|....*..
gi 446537436 156 IPKATFDILRKMK-PIRQIEAVGTMIN 181
Cdd:COG1475  159 LSLGHARALAALSdPERQEELAEKIIE 185
ParB_Srx_like_nuclease cd16400
ParB/Srx_like nuclease and putative transcriptional regulators related to SbnI; This family ...
12-85 1.07e-08

ParB/Srx_like nuclease and putative transcriptional regulators related to SbnI; This family contains a Pyrococcus Furiosus enzyme reported to have DNA nuclease activity and resembles the N-terminal domain of ParB proteins of the parABS bacterial chromosome partitioning system. This sub-family also includes siderophore staphylobactin biosynthesis protein SbnI. 60% of the P. furiosus nuclease activity was retained at 90 degree C, suggesting a physiological role in the organism, which can grow in temperatures as high as 100 degrees Celsius. The protein has endo- and exo-nuclease activity vs. single- and double-stranded DNA, and nuclease activity was lost in methylated proteins prepared for structure solution. This family has a fairly well-conserved DGHHR motif that corresponds to the same structural position as the phosphorylation site (a portion of the ATP-Mg-binding site) of sulfiredoxin and the arginine-rich ParB BoxII of ParB.


Pssm-ID: 319257 [Multi-domain]  Cd Length: 72  Bit Score: 51.01  E-value: 1.07e-08
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 446537436  12 YLETNKLIPSKELLENvkrshKYHQIVTSIESLGI-IEPIIVfyDKDKDVtkILDGHLRVEALKDLGIEKAPCIL 85
Cdd:cd16400    1 LLPISDLRPHEEVDPD-----RVEELIEKILEEGVwTKPIIV--DKNTGI--ILDGHHRLEAAKRLGLKRVPCVL 66
ParB_N_like_MT cd16403
ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent ...
36-84 5.70e-08

ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent methyltransferase; This family represents domains related to the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system, fused to a variety of C-terminal domains, including S-adenosylmethionine-dependent methyltransferase-like domains. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319260 [Multi-domain]  Cd Length: 88  Bit Score: 49.38  E-value: 5.70e-08
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*....
gi 446537436  36 QIVTSIESLGIIEPIIVfydkDKDVTkILDGHLRVEALKDLGIEKAPCI 84
Cdd:cd16403   22 QLAASIREFGFTNPILV----DEDGV-IIAGHGRLLAAKLLGLKEVPVI 65
ParB_N_Srx cd16387
ParB N-terminal domain and sulfiredoxin protein-related families; The ParB N-terminal domain ...
36-84 9.24e-08

ParB N-terminal domain and sulfiredoxin protein-related families; The ParB N-terminal domain/Sulfiredoxin (Srx) superfamily contains proteins with diverse activities. Many of the families are involved in segregation and competition between plasmids and chromosomes. Several families share similar activities with the N-terminal domain of ParB (Spo0J in Bacillus subtilis), a DNA-binding component of the prokaryotic parABS partitioning system. Also within this superfamily is sulfiredoxin (Srx; reactivator of oxidatively inactivated 2-cys peroxiredoxins), RepB N-terminal domain (plasmid segregation replication protein B like protein), nucleoid occlusion protein, KorB N-terminal domain partition protein of low copy number plasmid RK2, irbB (immunoglobulin-binding regulator that activates eib genes), N-terminal domain of sopB protein (promotes proper partitioning of F1 plasmid), fertility inhibition factors OSA and FiwA,DNA sulfur modification protein DndB, and a ParB-like toxin domain. Other activities includes a StrR (regulator in the streptomycin biosynthetic gene cluster), and a family containing a Pyrococcus furiosus nuclease and putative transcriptional regulators sbnI (Staphylococcus aureus siderophore biosynthetic gene cluster ). Nuclease activity has also been reported in Arabidopsis Srx.


Pssm-ID: 319246 [Multi-domain]  Cd Length: 54  Bit Score: 47.97  E-value: 9.24e-08
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*....
gi 446537436  36 QIVTSIESLGIIEPIIVFYDKDKDVTkILDGHLRVEALKDLGIEKAPCI 84
Cdd:cd16387    7 ELAESIREHGVLQPIIVRPLPDGRYE-IIAGERRWRAAKLAGLTTIPVV 54
ParB_N_like_MT cd16844
ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent ...
36-87 1.42e-07

ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent methyltransferase domain; This family represents domains related to the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system, fused to a variety of C-terminal domains, including S-adenosylmethionine-dependent methyltransferase-like domains and DUF4417. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319272 [Multi-domain]  Cd Length: 54  Bit Score: 47.26  E-value: 1.42e-07
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|..
gi 446537436  36 QIVTSIESLGIIEPIIVfydkDKDVTkILDGHLRVEALKDLGIEKAPCILSS 87
Cdd:cd16844    8 RVAASIREFGFRVPVLI----DKDGE-IVDGHLRLEAARRLGLETVPVIRVD 54
ParB smart00470
ParB-like nuclease domain; Plasmid RK2 ParB preferentially cleaves single-stranded DNA. ParB ...
11-91 3.73e-07

ParB-like nuclease domain; Plasmid RK2 ParB preferentially cleaves single-stranded DNA. ParB also nicks supercoiled plasmid DNA preferably at sites with potential single-stranded character, like AT-rich regions and sequences that can form cruciform structures. ParB also exhibits 5-->3 exonuclease activity.


Pssm-ID: 214678 [Multi-domain]  Cd Length: 89  Bit Score: 47.30  E-value: 3.73e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436    11 IYLETNKLIPSKELLENVKRShKYHQIVTSIESLGIIEPIIVfyDKDKDVTKILDGHLRVEALKDLGIEKAPCILSSIDD 90
Cdd:smart00470   1 VEVPIEKLRPNPDQPRLTSEE-SLEELAESIKENGLLQPIIV--RPNDGRYEIIDGERRLRAAKLLGLKEVPVIVRDLDD 77

                   .
gi 446537436    91 A 91
Cdd:smart00470  78 E 78
ParB_N_like cd16407
ParB N-terminal, parA-binding, -like domain of bacterial and plasmid parABS partitioning ...
33-90 7.72e-07

ParB N-terminal, parA-binding, -like domain of bacterial and plasmid parABS partitioning systems; This family represents the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319264 [Multi-domain]  Cd Length: 86  Bit Score: 46.36  E-value: 7.72e-07
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 446537436  33 KYHQIVTSIESLGIIEPIIVFYDKDKDVtKILDGHLRVEALKDLGIEKAPCILSSIDD 90
Cdd:cd16407   19 EMEELVESIKENGVLTPIIVRPREDGGY-EIISGHRRKRACELAGLETIPVIVREMDD 75
ParB_N_like_MT cd16401
ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent ...
20-89 1.86e-06

ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent methyltransferase domain; This family represents domains related to the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system, fused to a variety of C-terminal domains, including S-adenosylmethionine-dependent methyltransferase-like domains. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319258 [Multi-domain]  Cd Length: 85  Bit Score: 45.29  E-value: 1.86e-06
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436  20 PSKELLENvkrSHKYHQIVTSIESLGIIEPIIVFYDKDKdvtkILDGHLRVEALKDLGIEKAPCILSSID 89
Cdd:cd16401    6 PRKDLKPG---DKEYEKLKESIEEFGLVDPLIVNKRTNV----LIGGHQRLKVLKELGYTEVPVVVVDLD 68
pNOB8_ParB_N_like cd16404
pNOB8 ParB-like N-terminal domain, plasmid partitioning system protein domain; archaeal pNOB8 ...
16-90 2.61e-06

pNOB8 ParB-like N-terminal domain, plasmid partitioning system protein domain; archaeal pNOB8 ParB acts in a plasmid partitioning system made up of 3 parts: AspA, ParA motor protein, and ParB, which links ParA to the protein-DNA superhelix. As demonstrated in Sulfolobus, AspA spreads along DNA, which allows ParB binding, and links to the Walker-motif containing ParA motor protein. The Sulfolobus ParB C-terminal domain resembles eukaryotic segregation protein CenpA, and other histones. This family is related to the N-terminal domain of ParB (Spo0J in Bacillus subtilis), a DNA-binding component of the prokaryotic parABS partitioning system and related proteins.


Pssm-ID: 319261 [Multi-domain]  Cd Length: 69  Bit Score: 44.19  E-value: 2.61e-06
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 446537436  16 NKLIPSKELLENVKRShkyhqivtsIESLGIIEPIIVfydkDKDVTkILDGHLRVEALKDLGIEKAPCILSSIDD 90
Cdd:cd16404    8 RTPNPTNEEFEELKES---------IRKNGIIVPIIV----DQDGV-IIDGHHRYRIAKELGIKEVPVIVYDFDD 68
parB_part TIGR00180
ParB/RepB/Spo0J family partition protein; This model represents the most well-conserved core ...
37-174 2.05e-05

ParB/RepB/Spo0J family partition protein; This model represents the most well-conserved core of a set of chromosomal and plasmid partition proteins related to ParB, including Spo0J, RepB, and SopB. Spo0J has been shown to bind a specific DNA sequence that, when introduced into a plasmid, can serve as partition site. Study of RepB, which has nicking-closing activity, suggests that it forms a transient protein-DNA covalent intermediate during the strand transfer reaction.


Pssm-ID: 272946 [Multi-domain]  Cd Length: 187  Bit Score: 44.29  E-value: 2.05e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   37 IVTSIESLGIIEPIIVF-YDKDKDVTKILDGHLRVEALKDLGIEKAPCILSSIDD------AFTPNKQVNHINVVEEHRM 109
Cdd:TIGR00180  32 LIESIKEQGQLQPILVRkHPDQPGRYEIIAGERRWRAAKLAGLKTIPAIVRELDDeqmladALIENIQREDLSPIEEAQA 111
                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 446537436  110 IIKSLAKVS--IEKLSAALGISVDAIkdkANVMNGID-PSVIAKLSDKPIPKATFDILRKMKPIRQIE 174
Cdd:TIGR00180 112 YKRLLEKFSmtQEDLAKKIGKSRAHI---TNLLRLLKlPSEIQSAIPEASGLLSSGHARLLLALKKKP 176
ParB_N_like cd16409
ParB N-terminal-like domain of bacterial and plasmid parABS partitioning systems; This family ...
37-91 3.09e-05

ParB N-terminal-like domain of bacterial and plasmid parABS partitioning systems; This family represents the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319266 [Multi-domain]  Cd Length: 74  Bit Score: 41.52  E-value: 3.09e-05
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 446537436  37 IVTSIESLGIIEPIIVFYDKDKDVTKILDGHlRVEALKDLGIEKAPCILSSIDDA 91
Cdd:cd16409    9 LAQSIAEHGLLTPITVRQDPGGRYTLIAGAH-RLAAAKLLGWDTIDAIIVKADDL 62
ParBc pfam02195
ParB/Sulfiredoxin domain; Proteins containing this domain include Escherichia coli plasmid ...
13-90 3.56e-05

ParB/Sulfiredoxin domain; Proteins containing this domain include Escherichia coli plasmid protein ParB and mammalian Sulfiredoxin-1. ParB is involved in chromosome partition. It localizes to both poles of the predivisional cell following completion of DNA replication. Sulfiredoxin-1 contributes to oxidative stress resistance by reducing cysteine-sulfinic acid formed under exposure to oxidants in the peroxiredoxins PRDX1, PRDX2, PRDX3 and PRDX4.


Pssm-ID: 426651 [Multi-domain]  Cd Length: 90  Bit Score: 41.50  E-value: 3.56e-05
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 446537436   13 LETNKLIPSKELLENVKrshkyhQIVTSIESLGIIEPIIVfyDKDKDVT-KILDGHLRVEALKDLGIEKAPCILSSIDD 90
Cdd:pfam02195   8 LRPNPDQPRKDSEESLE------ELAASIKKRGLLQPIIV--RKTPDGRyEIIAGERRLRAAKLLGLKEVPVIVREIDD 78
ParB_N_like cd16408
ParB N-terminal, parA -binding, -like domain of bacterial and plasmid parABS partitioning ...
33-91 4.21e-05

ParB N-terminal, parA -binding, -like domain of bacterial and plasmid parABS partitioning systems; This family represents the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319265 [Multi-domain]  Cd Length: 84  Bit Score: 41.46  E-value: 4.21e-05
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*....
gi 446537436  33 KYHQIVTSIESLGIIEPIIVFYDKDKDVtKILDGHLRVEALKDLGIEKAPCILSSIDDA 91
Cdd:cd16408   16 RLEDMVESIKENGVLQPIIVRPIEDGKY-EILAGHNRVNAAKLAGLTTIPAIIKENLTD 73
ParB_N_like_MT cd16402
ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent ...
40-84 4.62e-05

ParB N-terminal-like domain, some attached to C-terminal S-adenosylmethionine-dependent methyltransferase domain; This family represents domains related to the N-terminal domain of ParB, a DNA-binding component of the prokaryotic parABS partitioning system, fused to a variety of C-terminal domains, including S-adenosylmethionine-dependent methyltransferase-like domains and DUF4417. parABS contributes to the efficient segregation of chromosomes and low-copy number plasmids to daughter cells during prokaryotic cell division. The process includes the parA (Walker box) ATPase, the ParB DNA-binding protein and a parS cis-acting DNA sites. Binding of ParB to centromere-like parS sites is followed by non-specific binding to DNA ("spreading", which has been implicated in gene silencing in plasmid P1) and oligomerization of additional ParB molecules near the parS sites. It has been proposed that ParB-ParB cross-linking compacts the DNA, binds to parA via the N-terminal region, and leads to parA separating the ParB-parS complexes and the recruitment of the SMC (structural maintenance of chromosomes) complexes. The ParB N-terminal domain of Bacillus subtilis and other species contains a Arginine-rich ParB Box II with residues essential for bridging of the ParB-parS complexes. The arginine-rich ParB Box II consensus (I[VIL]AGERR[FYW]RA[AS] identified in several species is partially conserved with this family and related families. Mutations within the basic columns particularly debilitate spreading from the parS sites and impair SMC recruitment. The C-terminal domain contains a HTH DNA-binding motif and is the primary homo-dimerization domain, and binds to parS DNA sites. Additional homo-dimerization contacts are found along the N-terminal domain, but dimerization of the N-terminus may only occur after concentration at ParB-parS foci.


Pssm-ID: 319259 [Multi-domain]  Cd Length: 87  Bit Score: 41.06  E-value: 4.62e-05
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*
gi 446537436  40 SIESLGIIEPIIVfydkDKDVTkILDGHLRVEALKDLGIEKAPCI 84
Cdd:cd16402   25 SIKEFGFLVPIVV----DKNNV-IVAGHTRYKAAKRLGLEEVPCI 64
Noc_N cd16396
nucleoid occlusion protein, N-terminal domain, and related domains of the ParB partitioning ...
8-90 6.74e-05

nucleoid occlusion protein, N-terminal domain, and related domains of the ParB partitioning protein family; Nucleoid occlusion protein has been shown in Bacillus subtilis to bind to specific DNA sequences on the chromosome (Noc-binding DNA sequences, NBS), inhibiting cell division near the nucleoid and thereby protecting the chromosome. This N-terminal domain is related to the N-terminal domain of ParB/repB partitioning system proteins.


Pssm-ID: 319254 [Multi-domain]  Cd Length: 95  Bit Score: 41.05  E-value: 6.74e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 446537436   8 DNFIYLETNKLIPSKELLENVKRSHKYHQIVTSIESLGIIEPIIVfyDKDKDVT-KILDGHLRVEALKDLGIEKAPCILS 86
Cdd:cd16396    1 GEVLEIPVADIIPNPYQPRKEFDEEEIEELAESIKEHGLLQPIVV--RKTKDGGyEIVAGERRWRAAKLLGWEKIPAIIR 78

                 ....
gi 446537436  87 SIDD 90
Cdd:cd16396   79 DLSD 82
SbnI_like_N cd16388
N-terminal domain of transcriptional regulators similar to SbnI; Siderophore staphylobactin ...
17-83 6.18e-03

N-terminal domain of transcriptional regulators similar to SbnI; Siderophore staphylobactin biosynthesis protein SbnI of Staphylococcus aureus is a ParB/Spo0J like protein required for the expression of genes in the sbn operon, which is responsible for staphyloferrin B (SB) biosynthesis. SnbI forms dimers and binds DNA upstream of sdnD. SbnI binds heme, which inhibits DNA binding of SbnI, leading to a suppression of sbn operon expression.


Pssm-ID: 319247 [Multi-domain]  Cd Length: 77  Bit Score: 34.79  E-value: 6.18e-03
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 446537436  17 KLIPSKELL--ENVKRSHkYHQIVTSIESLGI-IEPIIVF-YDKDKDVtkILDGHLRVEALKDLGIEKAPC 83
Cdd:cd16388    2 KLVPIEQIRlhEEHEPNR-LEKLVERIEAEGVlRNPPIVTpLQDGRYL--ILDGAHRTTALKKLGCKRIPV 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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