Figure 2.

Motifs from pooled gene promoters. (A and B) Pasteurellaceae; (C and D) Enterobacteriaceae; (E and F) Vibrionaceae. CRP-S promoter orthologs are those in Figure 1. Logos were generated from alignment of all sites in Supplementary Tables 1 through 6 using WebLogo (http://weblogo.cbr.nrc.ca/logo.cgi). White bars highlight the conserved CRP-binding site motifs between positions 4–8 and 15–19. WebLogo employs a correction factor to compensate for underestimates of entropy arising from limited sequence data: error bars are twice the height of this correction (78).