FIG. 2.

Comparisons of those cps loci within cluster 1 assigned to the same subcluster. The relatedness of the cps loci in the subcluster is from Fig. 1. The cps loci and ACT comparisons based on the amino acid sequence similarities of the products of the cps loci are shown, along with the CPS repeat unit structures, where known. CPS structures are represented as in the report by Bentley et al. (5), with the initial sugar that is attached to the lipid carrier (///) on the right. The linkage between repeat units catalyzed by the Wzy polymerase is between the two sugars marked by arrows. The genes that are predicted to catalyze the linkages in the repeat units are shown on the structure. The basis of these gene assignments is discussed in detail by Aanensen et al. (1), and uncertain GT assignments are presented in parentheses. The color keys for the functional classes of genes in the cps loci and for the sugars (and other constituents) in the CPS repeat units are shown at the bottom.