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Alignment of the amino acid sequences of the PepA homologs from V. cholerae (V. chol), E. coli, P. aeruginosa (P. aeru), H. influenzae (H. infl), and P. putida (P. puti). An asterisk indicates that the residue at that position is conserved among all the sequences shown. The residues shown in boldface are in the active site of the enzyme based on the crystal structure of bovine lens leucine aminopeptidase (4).
