FIG. 2.

Amino acid sequence alignment of the putative catalytic domains of YjgB of L. lactis IL-1403, dl-endopeptidase II of B. sphaericus (EPII), and the LytE and LytF endopeptidases of B. subtilis. The alignment was performed with the ClustalW 1.74 program. *, identical amino acids in all four sequences. The motif Asp-Cys-Ser-Gly, characteristic of the dl-endopeptidase II family and containing the putative Cys residue present in the catalytic site, is shaded. The numbers refer to amino acid sequence positions.