3E2K:
reference: Structural and biochemical characterization of the interaction between KPC-2 beta-lactamase and beta-lactamase inhibitor protein ., Hanes MS, Jude KM, Berger JM, Bonomo RA, Handel TM, Biochemistry. 2009 Oct 6;48(39):9185-93. PMID: 19731932

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