FIG 1.

Repeat unit structures and scwp2 gene clusters of members of the B. cereus sensu lato group. (A) Structure of terminal and repeat units of B. anthracis SCWP. Acetylation and pyruvylation of the terminal unit are depicted in orange and green, along with the enzymes CsaB and PatA1/PatA2, which are responsible for these substitutions. α-Gal and β-Gal modifications are depicted in blue and red. Ac, acetyl; MCP, methyl-accepting chemotaxis protein. (B) Comparison of scwp2 gene clusters (right) with a description of repeat unit structures (left). Gray blocks represent conserved genes between B. anthracis, B. cereus G9241, B. cereus ATCC 14579, and B. cereus ATCC 10987. Colored blocks indicate genes encoding predicted galactosyltransferases. Functions of genes are provided as described in the PubMed Data Bank and as described previously (20). GT, glycosyltransferase.