6C3K:
reference: Structural and kinetic analysis of penicillin-binding protein 4 (PBP4)-mediated antibiotic resistance in Staphylococcus aureus., Alexander JAN, Chatterjee SS, Hamilton SM, Eltis LD, Chambers HF, Strynadka NCJ, J Biol Chem. 2018 Oct 26. pii: RA118.004952. doi: 10.1074/jbc.RA118.004952. PMID: 30366985

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