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3.A.7.1.1
Conjugal DNA-protein transfer complexes. The VirB4 ATPase may mediate dislocation of the membrane-integrated VirB2 pilin (N- and C-termini out; cytoplasmic loop= residues 90-94 inside) during biogenesis of the Agrobacterium VirB/VirD4 type IV secretion system. VirB6 domains direct the ordered export of the DNA substrate through a type IV secretion System (Jakubowski et al. 2004).

Accession Number:P0A3W4
Protein Name:VirB7 aka VIB7
Length:55
Molecular Weight:5930.00
Species:Agrobacterium tumefaciens [358]
Location1 / Topology2 / Orientation3: Cell outer membrane1 / Lipid-anchor2
Substrate protein polypeptide chain

Cross database links:

DIP: DIP-335N
RefSeq: NP_059805.1   
Entrez Gene ID: 1224324   

Gene Ontology

GO:0009279 C:cell outer membrane
GO:0005886 C:plasma membrane
GO:0009405 P:pathogenesis

References (5)

[1] “Characterization of the virB operon from an Agrobacterium tumefaciens Ti plasmid.”  Ward J.E.et.al.   3281947
[2] “”  Ward J.E.et.al.   2307685
[3] “The Agrobacterium tumefaciens virB7 gene product, a proposed component of the T-complex transport apparatus, is a membrane-associated lipoprotein exposed at the periplasmic surface.”  Fernandez D.et.al.   8655494
[4] “VirB7 lipoprotein is exocellular and associates with the Agrobacterium tumefaciens T pilus.”  Sagulenko V.et.al.   11371529
[5] “Agrobacterium tumefaciens VirB7 and VirB9 form a disulfide-linked protein complex.”  Anderson L.B.et.al.   8799123

External Searches:

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MKYCLLCLVV ALSGCQTNDT IASCKGPIFP LNVGRWQPTP SDLQLRNSGG RYDGA