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Conserved domains on  [gi|1371679498|ref|WP_106652248|]
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TrbG/VirB9 family P-type conjugative transfer protein [Escherichia coli]

Protein Classification

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
VirB9_CagX_TrbG super family cl11423
VirB9/CagX/TrbG, a component of the type IV secretion system; VirB9 is a component of the type ...
8-288 3.13e-59

VirB9/CagX/TrbG, a component of the type IV secretion system; VirB9 is a component of the type IV secretion system, which is employed by pathogenic bacteria to export virulence proteins directly from the bacterial cytoplasm into the host cell. Unlike the more common type III secretion system, type IV systems evolved from the conjugative apparatus, which is used to transfer DNA between cells. VirB9 was initially identified as an essential virulence gene on the Agrobacterium tumefaciens Ti plasmid. In the pilin-like conjugative structure, VirB9 appears to form a stabilizing complex in the outer membrane, by interacting with the lipoprotein VirB7. The heterodimer has been shown to stabilize other components of the type IV system. This alignment model spans the C-terminal domain of VirB9. CagX is a component of the Helicobacter pylori cag PAI-encoded type IV secretion system. Some other members of this family are involved in conjugal transfer to T-DNA of plant cells.


The actual alignment was detected with superfamily member TIGR02781:

Pssm-ID: 448249 [Multi-domain]  Cd Length: 243  Bit Score: 189.85  E-value: 3.13e-59
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498   8 LIMALLMAAHVCHAAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNKEDNLVYl 87
Cdd:TIGR02781   4 IALLLLTLAIPAYALNTPRGSSYDSRIRTVVYNPDDVVRVVTSYGYSTTIEFADDETIKTVAVGDSKAWEVTPNGNKLF- 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  88 eVRPVKQtvqknnmdengntssesvsvaldpeneleRWRTNLFVRTTKRNYSMELNARTFRQPE--KIAFVVNYQYPQER 165
Cdd:TIGR02781  83 -IKPTEK-----------------------------DWKTNMTVVTNKRSYVFDLTSRDGLDSEvqDLAYSVRFRYPAEE 132
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 166 RKEqaeiekkrtEALARRLEEQAINRSLENAKSPR--NWQYWKrvaEGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVM 243
Cdd:TIGR02781 133 AEA---------DADLAKLAEAKQSQPIANGLGPEdvNWNYTF---SGSASIAPIEAFDDGRFTYFKFPNNKEIPAIFIV 200
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*.
gi 1371679498 244 N-GMQETLTNPVIKQSgsfTAVGVPVDKRFVLRLGEQVVGIENQGF 288
Cdd:TIGR02781 201 DeDGKESLVNYRVEGN---YVVVQGVAKKLVLRYGDKVVGVFNTAF 243
 
Name Accession Description Interval E-value
VirB9 TIGR02781
P-type conjugative transfer protein VirB9; The VirB9 protein is found in the vir locus of ...
8-288 3.13e-59

P-type conjugative transfer protein VirB9; The VirB9 protein is found in the vir locus of Agrobacterium Ti plasmids where it is involved in a type IV secretion system . VirB9 is a homolog of the F-type conjugative transfer system TraK protein (which is believed to be an outer membrane pore-forming secretin, TIGR02756) as well as the Ti system TrbG protein. [Cellular processes, Conjugation]


Pssm-ID: 274296 [Multi-domain]  Cd Length: 243  Bit Score: 189.85  E-value: 3.13e-59
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498   8 LIMALLMAAHVCHAAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNKEDNLVYl 87
Cdd:TIGR02781   4 IALLLLTLAIPAYALNTPRGSSYDSRIRTVVYNPDDVVRVVTSYGYSTTIEFADDETIKTVAVGDSKAWEVTPNGNKLF- 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  88 eVRPVKQtvqknnmdengntssesvsvaldpeneleRWRTNLFVRTTKRNYSMELNARTFRQPE--KIAFVVNYQYPQER 165
Cdd:TIGR02781  83 -IKPTEK-----------------------------DWKTNMTVVTNKRSYVFDLTSRDGLDSEvqDLAYSVRFRYPAEE 132
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 166 RKEqaeiekkrtEALARRLEEQAINRSLENAKSPR--NWQYWKrvaEGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVM 243
Cdd:TIGR02781 133 AEA---------DADLAKLAEAKQSQPIANGLGPEdvNWNYTF---SGSASIAPIEAFDDGRFTYFKFPNNKEIPAIFIV 200
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*.
gi 1371679498 244 N-GMQETLTNPVIKQSgsfTAVGVPVDKRFVLRLGEQVVGIENQGF 288
Cdd:TIGR02781 201 DeDGKESLVNYRVEGN---YVVVQGVAKKLVLRYGDKVVGVFNTAF 243
VirB9 COG3504
Type IV secretory pathway, VirB9 components [Intracellular trafficking, secretion, and ...
21-292 1.42e-47

Type IV secretory pathway, VirB9 components [Intracellular trafficking, secretion, and vesicular transport];


Pssm-ID: 442727 [Multi-domain]  Cd Length: 229  Bit Score: 159.31  E-value: 1.42e-47
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  21 AAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNK-EDNLVYleVRPVKqtvqkn 99
Cdd:COG3504     1 ALVTPRPGAYDNRIRVVPYNPGAVYRVYTAPGYVTDIELEPGEEIESVAAGDTVRWQVGPtKGNHLF--VKPTE------ 72
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 100 nmdengntssesvsvaldpenelERWRTNLFVRTTKRNYSMELNARTfrQPEKIAFVVNYQYPQERRKEQAEIEKKRtEA 179
Cdd:COG3504    73 -----------------------PGLDTNLTVVTNRRTYHFELRSTA--DRATYMYRVRFRYPDDEAAALAAAAAAA-AA 126
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 180 LARRLEEQAINrslenaKSPRNWQYWKRvaeGSQDISPDYAYDDGRYTWFGFSPL-KKIPSVFVMN-GMQETLTNPVIKq 257
Cdd:COG3504   127 AAAAPVAPGVD------PEPLNFNYTIS---GDAALRPVRVFDDGRFTYIRFPAGnGELPAIFVVGpDGEESLVNYRVR- 196
                         250       260       270
                  ....*....|....*....|....*....|....*.
gi 1371679498 258 sGSFTAV-GVPvdKRFVLRLGEQVVGIENQGFGKVR 292
Cdd:COG3504   197 -GNYVVVdRVF--PAAVLRLGDEVVCIENTGFGPAK 229
CagX pfam03524
Conjugal transfer protein; This family includes type IV secretion system CagX conjugation ...
35-286 2.22e-47

Conjugal transfer protein; This family includes type IV secretion system CagX conjugation protein. Other members of this family are involved in conjugal transfer to plant cells of T-DNA.


Pssm-ID: 427348 [Multi-domain]  Cd Length: 216  Bit Score: 158.21  E-value: 2.22e-47
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  35 QIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNKEDNLVYleVRPVKqtvqknnmdengntssesvsv 114
Cdd:pfam03524   3 RVVPYSPGAVYRVYTAPGYVTDIELEPGETIVAVALGDTVRWEVGPRGNHLF--VKPTE--------------------- 59
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 115 aldpenelERWRTNLFVRTTKRNYSMELNARTFRQPEKiAFVVNYQYPQERRkEQAEIEKKRTEALARRLEEQAINRSLE 194
Cdd:pfam03524  60 --------AGLDTNLVVVTDRRTYHFELRSTSRDNATY-MYVVRFRYPDDEA-AAAAAAAAAAAAASLAAAEAAAPAAEG 129
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 195 NAKSPRNWQYwkrVAEGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVMN-GMQETLTNPVIKqsGSFTAV-GVPvdKRF 272
Cdd:pfam03524 130 VAPGALNFRY---AISGDAAIAPVRVFDDGRFTYIRFPANGELPALFVVGpDGKESLVNYRVE--GNYVVVdRVA--RRF 202
                         250
                  ....*....|....
gi 1371679498 273 VLRLGEQVVGIENQ 286
Cdd:pfam03524 203 VLRLGQEVVRIENE 216
PRK13861 PRK13861
type IV secretion system protein VirB9; Provisional
1-307 6.77e-24

type IV secretion system protein VirB9; Provisional


Pssm-ID: 172382 [Multi-domain]  Cd Length: 292  Bit Score: 98.78  E-value: 6.77e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498   1 MKMNKGALIMALLMAAHVCHAAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISArtgfpqgwavnK 80
Cdd:PRK13861    1 MIKKLFLTLACLLFAAIGALAEDTPAAGKLDPRMRYLAYNPDQVVRLSTAVGATLVVTFGANETVTAV-----------A 69
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  81 EDNLVYLEVRPVkqtvqknnmdenGNTSSESVSVALDPENelerwrtnLFVRTTK----RNYSMELNARTFRQPEK---- 152
Cdd:PRK13861   70 VSNSKDLAALPR------------GNYLFFKASKVLPPQP--------VIVLTASdagmRRYVFSISSKTLSHLDKeqpd 129
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 153 IAFVVNYQYPQER---RKEQAE----IEKKRTEALARRLEEQAINRSLENAKS-PRNWQYwkrVAEGSQDISPDYAYDDG 224
Cdd:PRK13861  130 LYYSVQFTYPADDaaaRRKEAEqkavADRLRAEAQYQRRAEDLLDQPATDGGAgDKNWHY---VAQGDRSLLPLEVFDNG 206
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 225 RYTWFGFSPLKKIPSVFVMN-GMQETLTNPVIKqsGSFtaVGVP-VDKRFVLRLGEQVVGIENQGFGKV-RLPAGDTVSP 301
Cdd:PRK13861  207 FSTVFRFPGNVRIPSIYTINpDGKEATANYSVK--GSY--VEVSsVSREWRLRDGHTVLCIWNTAYDPVgRRPGTGTVRP 282

                  ....*.
gi 1371679498 302 DVKKEV 307
Cdd:PRK13861  283 DVKRVL 288
VirB9_CagX_TrbG cd06911
VirB9/CagX/TrbG, a component of the type IV secretion system; VirB9 is a component of the type ...
197-287 1.26e-21

VirB9/CagX/TrbG, a component of the type IV secretion system; VirB9 is a component of the type IV secretion system, which is employed by pathogenic bacteria to export virulence proteins directly from the bacterial cytoplasm into the host cell. Unlike the more common type III secretion system, type IV systems evolved from the conjugative apparatus, which is used to transfer DNA between cells. VirB9 was initially identified as an essential virulence gene on the Agrobacterium tumefaciens Ti plasmid. In the pilin-like conjugative structure, VirB9 appears to form a stabilizing complex in the outer membrane, by interacting with the lipoprotein VirB7. The heterodimer has been shown to stabilize other components of the type IV system. This alignment model spans the C-terminal domain of VirB9. CagX is a component of the Helicobacter pylori cag PAI-encoded type IV secretion system. Some other members of this family are involved in conjugal transfer to T-DNA of plant cells.


Pssm-ID: 132874 [Multi-domain]  Cd Length: 86  Bit Score: 86.87  E-value: 1.26e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 197 KSPRNWQYWKRvaeGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVMN-GMQETLTNPVIKQsGSFTAVGVPvdKRFVLR 275
Cdd:cd06911     1 PGPLNFDYSIS---GSAAIKPVRVFDDGRFTYFQFPPNAELPAIFVVDpDGKESLVNYRVEG-NYIVVDGVA--PKLVLR 74
                          90
                  ....*....|..
gi 1371679498 276 LGEQVVGIENQG 287
Cdd:cd06911    75 LGDEVVRIVNKG 86
 
Name Accession Description Interval E-value
VirB9 TIGR02781
P-type conjugative transfer protein VirB9; The VirB9 protein is found in the vir locus of ...
8-288 3.13e-59

P-type conjugative transfer protein VirB9; The VirB9 protein is found in the vir locus of Agrobacterium Ti plasmids where it is involved in a type IV secretion system . VirB9 is a homolog of the F-type conjugative transfer system TraK protein (which is believed to be an outer membrane pore-forming secretin, TIGR02756) as well as the Ti system TrbG protein. [Cellular processes, Conjugation]


Pssm-ID: 274296 [Multi-domain]  Cd Length: 243  Bit Score: 189.85  E-value: 3.13e-59
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498   8 LIMALLMAAHVCHAAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNKEDNLVYl 87
Cdd:TIGR02781   4 IALLLLTLAIPAYALNTPRGSSYDSRIRTVVYNPDDVVRVVTSYGYSTTIEFADDETIKTVAVGDSKAWEVTPNGNKLF- 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  88 eVRPVKQtvqknnmdengntssesvsvaldpeneleRWRTNLFVRTTKRNYSMELNARTFRQPE--KIAFVVNYQYPQER 165
Cdd:TIGR02781  83 -IKPTEK-----------------------------DWKTNMTVVTNKRSYVFDLTSRDGLDSEvqDLAYSVRFRYPAEE 132
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 166 RKEqaeiekkrtEALARRLEEQAINRSLENAKSPR--NWQYWKrvaEGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVM 243
Cdd:TIGR02781 133 AEA---------DADLAKLAEAKQSQPIANGLGPEdvNWNYTF---SGSASIAPIEAFDDGRFTYFKFPNNKEIPAIFIV 200
                         250       260       270       280
                  ....*....|....*....|....*....|....*....|....*.
gi 1371679498 244 N-GMQETLTNPVIKQSgsfTAVGVPVDKRFVLRLGEQVVGIENQGF 288
Cdd:TIGR02781 201 DeDGKESLVNYRVEGN---YVVVQGVAKKLVLRYGDKVVGVFNTAF 243
VirB9 COG3504
Type IV secretory pathway, VirB9 components [Intracellular trafficking, secretion, and ...
21-292 1.42e-47

Type IV secretory pathway, VirB9 components [Intracellular trafficking, secretion, and vesicular transport];


Pssm-ID: 442727 [Multi-domain]  Cd Length: 229  Bit Score: 159.31  E-value: 1.42e-47
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  21 AAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNK-EDNLVYleVRPVKqtvqkn 99
Cdd:COG3504     1 ALVTPRPGAYDNRIRVVPYNPGAVYRVYTAPGYVTDIELEPGEEIESVAAGDTVRWQVGPtKGNHLF--VKPTE------ 72
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 100 nmdengntssesvsvaldpenelERWRTNLFVRTTKRNYSMELNARTfrQPEKIAFVVNYQYPQERRKEQAEIEKKRtEA 179
Cdd:COG3504    73 -----------------------PGLDTNLTVVTNRRTYHFELRSTA--DRATYMYRVRFRYPDDEAAALAAAAAAA-AA 126
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 180 LARRLEEQAINrslenaKSPRNWQYWKRvaeGSQDISPDYAYDDGRYTWFGFSPL-KKIPSVFVMN-GMQETLTNPVIKq 257
Cdd:COG3504   127 AAAAPVAPGVD------PEPLNFNYTIS---GDAALRPVRVFDDGRFTYIRFPAGnGELPAIFVVGpDGEESLVNYRVR- 196
                         250       260       270
                  ....*....|....*....|....*....|....*.
gi 1371679498 258 sGSFTAV-GVPvdKRFVLRLGEQVVGIENQGFGKVR 292
Cdd:COG3504   197 -GNYVVVdRVF--PAAVLRLGDEVVCIENTGFGPAK 229
CagX pfam03524
Conjugal transfer protein; This family includes type IV secretion system CagX conjugation ...
35-286 2.22e-47

Conjugal transfer protein; This family includes type IV secretion system CagX conjugation protein. Other members of this family are involved in conjugal transfer to plant cells of T-DNA.


Pssm-ID: 427348 [Multi-domain]  Cd Length: 216  Bit Score: 158.21  E-value: 2.22e-47
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  35 QIVSYNPNNTTIINSAVGYTTTLVFDEDETVISARTGFPQGWAVNKEDNLVYleVRPVKqtvqknnmdengntssesvsv 114
Cdd:pfam03524   3 RVVPYSPGAVYRVYTAPGYVTDIELEPGETIVAVALGDTVRWEVGPRGNHLF--VKPTE--------------------- 59
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 115 aldpenelERWRTNLFVRTTKRNYSMELNARTFRQPEKiAFVVNYQYPQERRkEQAEIEKKRTEALARRLEEQAINRSLE 194
Cdd:pfam03524  60 --------AGLDTNLVVVTDRRTYHFELRSTSRDNATY-MYVVRFRYPDDEA-AAAAAAAAAAAAASLAAAEAAAPAAEG 129
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 195 NAKSPRNWQYwkrVAEGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVMN-GMQETLTNPVIKqsGSFTAV-GVPvdKRF 272
Cdd:pfam03524 130 VAPGALNFRY---AISGDAAIAPVRVFDDGRFTYIRFPANGELPALFVVGpDGKESLVNYRVE--GNYVVVdRVA--RRF 202
                         250
                  ....*....|....
gi 1371679498 273 VLRLGEQVVGIENQ 286
Cdd:pfam03524 203 VLRLGQEVVRIENE 216
PRK13861 PRK13861
type IV secretion system protein VirB9; Provisional
1-307 6.77e-24

type IV secretion system protein VirB9; Provisional


Pssm-ID: 172382 [Multi-domain]  Cd Length: 292  Bit Score: 98.78  E-value: 6.77e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498   1 MKMNKGALIMALLMAAHVCHAAVLPSGSRFDPRNQIVSYNPNNTTIINSAVGYTTTLVFDEDETVISArtgfpqgwavnK 80
Cdd:PRK13861    1 MIKKLFLTLACLLFAAIGALAEDTPAAGKLDPRMRYLAYNPDQVVRLSTAVGATLVVTFGANETVTAV-----------A 69
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498  81 EDNLVYLEVRPVkqtvqknnmdenGNTSSESVSVALDPENelerwrtnLFVRTTK----RNYSMELNARTFRQPEK---- 152
Cdd:PRK13861   70 VSNSKDLAALPR------------GNYLFFKASKVLPPQP--------VIVLTASdagmRRYVFSISSKTLSHLDKeqpd 129
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 153 IAFVVNYQYPQER---RKEQAE----IEKKRTEALARRLEEQAINRSLENAKS-PRNWQYwkrVAEGSQDISPDYAYDDG 224
Cdd:PRK13861  130 LYYSVQFTYPADDaaaRRKEAEqkavADRLRAEAQYQRRAEDLLDQPATDGGAgDKNWHY---VAQGDRSLLPLEVFDNG 206
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 225 RYTWFGFSPLKKIPSVFVMN-GMQETLTNPVIKqsGSFtaVGVP-VDKRFVLRLGEQVVGIENQGFGKV-RLPAGDTVSP 301
Cdd:PRK13861  207 FSTVFRFPGNVRIPSIYTINpDGKEATANYSVK--GSY--VEVSsVSREWRLRDGHTVLCIWNTAYDPVgRRPGTGTVRP 282

                  ....*.
gi 1371679498 302 DVKKEV 307
Cdd:PRK13861  283 DVKRVL 288
VirB9_CagX_TrbG cd06911
VirB9/CagX/TrbG, a component of the type IV secretion system; VirB9 is a component of the type ...
197-287 1.26e-21

VirB9/CagX/TrbG, a component of the type IV secretion system; VirB9 is a component of the type IV secretion system, which is employed by pathogenic bacteria to export virulence proteins directly from the bacterial cytoplasm into the host cell. Unlike the more common type III secretion system, type IV systems evolved from the conjugative apparatus, which is used to transfer DNA between cells. VirB9 was initially identified as an essential virulence gene on the Agrobacterium tumefaciens Ti plasmid. In the pilin-like conjugative structure, VirB9 appears to form a stabilizing complex in the outer membrane, by interacting with the lipoprotein VirB7. The heterodimer has been shown to stabilize other components of the type IV system. This alignment model spans the C-terminal domain of VirB9. CagX is a component of the Helicobacter pylori cag PAI-encoded type IV secretion system. Some other members of this family are involved in conjugal transfer to T-DNA of plant cells.


Pssm-ID: 132874 [Multi-domain]  Cd Length: 86  Bit Score: 86.87  E-value: 1.26e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1371679498 197 KSPRNWQYWKRvaeGSQDISPDYAYDDGRYTWFGFSPLKKIPSVFVMN-GMQETLTNPVIKQsGSFTAVGVPvdKRFVLR 275
Cdd:cd06911     1 PGPLNFDYSIS---GSAAIKPVRVFDDGRFTYFQFPPNAELPAIFVVDpDGKESLVNYRVEG-NYIVVDGVA--PKLVLR 74
                          90
                  ....*....|..
gi 1371679498 276 LGEQVVGIENQG 287
Cdd:cd06911    75 LGDEVVRIVNKG 86
 
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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