Synonyms : Penicillin-Binding Protein, Penicillin-Binding Protein 1, Penicillin-Binding Protein 1A, Penicillin-Binding Protein 1b, Penicillin-Binding Protein 2, Penicillin-Binding Protein 2a, Penicillin-Binding Protein 2b, Penicillin-Binding Protein 3