Multiple sequence alignments (CLUSTAL) of the deduced ORFD (putative L31) sequence (A) and the deduced GtcA sequence (B). Abbreviations: B. subt L31 (accession no. M97678), E. coli L31 (accession no. U00096), and M. lepr L31 (accession no. Z73419), L31 sequences from B. subtilis, E. coli, and M. leprae, respectively; Ipa-34D B. subt (accession no. X73124), o120 E. coli (accession no. U000323), Rfbi S. flex (accession no. X71970), and Unk A. act (accession no. AB002668), sequences with similarity to the deduced gtcA product and derived from B. subtilis, E. coli, S. flexneri, and A. actinomycetemcomitans, respectively, as described in the text.