FIGURE 6.

Sequence logos representing alignments of Gammaproteobacterial homologs of E. coli K12 FtsQ and FtsB. A, a sequence logo was generated from an alignment of 246 Gammaproteobacterial homologs of E. coli K12 FtsQ, of which the periplasmic domain part is shown. The E. coli K12 FtsQ residues, numbering, and secondary structures (tube, α helix; arrow, β sheet) are indicated underneath the sequence logo. Residues substituted by Bpa for photo cross-linking are highlighted in orange. The consensus motif DLRY(d/e)(s/t)G is boxed. B, similar to A, an alignment of 240 Gammaproteobacterial homologs of E. coli K12 FtsB. The FtsQ interaction domain suggested by Gonzalez and Beckwith (26) is boxed.