FIG. 1.

Alignment of the C termini of experimentally identified P. gingivalis proteins with homology to the RgpB C terminus. The sequences are described using TIGR annotation, with PG0506 representing RgpB. The CTD is divided into five regions designated with the letters A to E above the alignment. The black shading indicates identical residues (>40% identity), light gray shading indicates nonpolar substitutions (A, V, F, P, M, I, L, W, and Y), and dark gray shading indicates polar (S, T, Y, H, C, N, G, and Q), acidic (D and E), or basic (R and K) substitutions. Residues that do not have >40% identity but have >70% conservative substitutions are also shaded.