Multiple alignment of the amino acid sequences of E. coli yaeM gene and other yaeM gene homologs. Identical amino acids among six proteins are marked by asterisks. The putative NADPH binding motif is marked by #. Dashes indicate gaps introduced for the optimization of the alignment. Ec, E. coli (accession no. AB013300); Bs, Bacillus subtilis (accession no. B69881); Hi, Haemophilus influenzae (accession no. P44055); Hp, Helicobacter pyroli, (accession no. P56139); Mycobacterium tuberculosis (accession no. Q10798), Sy, Synechocystis sp. PCC6803 (accession no. Q55663).