FIG. 1.

Alignment of VirB7 encoded by the A. tumefaciens T plasmid and TraV encoded by F plasmid. The sequences begin with the N-terminal cysteine characteristic of outer membrane lipoproteins; leader peptide sequences have been omitted. All cysteines are indicated by dark shading, and two other identical residues are indicated by light shading. Accession numbers or references are as follows: for VirB7 from pTiAB2/73, AF329849; for VirB7 from pTiA6NC, J03216; for VirB7 from pTiC58, X53264; for TraV from F plasmid, Frost et al. (6); for TraV from R100, NP_052954; and for TraV from pSLT, NP_490570.