J. Ayala et al., SITE-DIRECTED MUTAGENESIS OF PENICILLIN-BINDING PROTEIN-3 OF ESCHERICHIA-COLI - ROLE OF VAL-545, FEMS microbiology letters, 121(2), 1994, pp. 251-256
Val545 of the Escherichia coli penicillin-binding protein 3 is essenti
al to the acyl transfer mechanism through which the active-site serine
307 is acylated by benzylpenicillin and cephalexin and to the mechani
sm through which the protein allows rapidly growing cells to divide.