si_0206 Peptidoglycan_Crosslinking_of_Peptide_Stems Penicillin-binding protein AmpH si_0206 Peptidoglycan_Crosslinking_of_Peptide_Stems L,D-transpeptidase YcfS si_0206 Peptidoglycan_Crosslinking_of_Peptide_Stems L,D-transpeptidase ErfK si_0206 Peptidoglycan_Crosslinking_of_Peptide_Stems L,D-transpeptidase YbiS si_0206 Peptidoglycan_Crosslinking_of_Peptide_Stems L,D-transpeptidase YcbB si_0206 Peptidoglycan_Crosslinking_of_Peptide_Stems L,D-transpeptidase YnhG