Figure 4.

Sequence alignment of the family of ChaB proteins. (A) Alignment of ChaB from E. coli aligned with a series of related proteins identified by Pfam [34]. In bold above alignments, are residues most conserved among ChaB proteins. Cartoon diagram above represents the secondary structure of ChaB. ChaB from E. coli (in bold) Salmonella typhi (Q8XGJ2)and Methanosarcina mazei (Q8PYS9) are classified as group I ChaB proteins. Group II ChaB proteins are all found in Baculoviridae. The figure was created using BOXSHADE (EMBnet). Identical amino acids are highlighted in black and homologous residues in gray. (B) Sequence alignments of ChaB and related proteins σ⁷⁰ and σ^RN based structural composition (see text for details).