Figure 2From: The dissemination of C10 cysteine protease genes in Bacteroides fragilis by mobile genetic elementsAmino acid sequence alignment of the Bacteroides fragilis proteases Bfp with the archetype C10 protease SpeB from Streptococcus pyogenes. The alignment was generated with T-coffee [55]. The red back-highlight regions indicate the sequences flanking the critical active site Cys and His residues (vertical black arrowhead).Back to article page