CLUSTAL computer alignment of the deduced amino acid sequences encoded by the aroA gene from A. pleuropneumoniae (APL), H. influenzae (HINFL), P. haemolytica (PHAEM), Yersinia pestis (YERPES), Salmonella typhimurium (SALTYPHI), E. coli (ECOLI), K. pneumoniae (KLEBPNEU), Aeromonas salmonicida (ASA), and A. hydrophila (AHY). Identical amino acids in all species are indicated by an asterisk; conservative substitutions are indicated by a dot.