FIG. 8.

Comparison of proteins with amino acid sequences similar to the N-terminal portion of the YaaH protein. YaaH has two repeats of the consensus motif conserved among the bacterial lytic enzymes B. subtilis (Bs) XylA (23), Streptococcus faecalis (Ef) autolysin (4), Lactococcus lactis (Ll) AcmA (7), bacteriophage φLC3 (PhiLC3) LysB (5), and bacteriophage Tuc2009 lysin (3). B. subtilis XkdP, XlyB, YdhD, YhdD, YkuD, YkvP, YocH, YojL, YqbP, and YrbA, which have been identified by the B. subtilis genome sequencing project (21), also have the motif, but their characteristics are unknown. Identical and similar amino acid residues are indicated by black and gray boxes, respectively.