2EX6: Crystal Structure Of Penicillin Binding Protein 4 (Dacb) Fro Escherichia Coli, Complexed With Ampicillin
reference: Crystal structure of penicillin binding protein 4 (dacB) from Escherichia coli, both in the native form and covalently linked to various antibiotics., Kishida H, Unzai S, Roper DI, Lloyd A, Park SY, Tame JR, Biochemistry. 2006 Jan 24;45(3):783-92. PMID: 16411754

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