2ZD8:
reference: Inhibition of class A beta-lactamases by carbapenems: crystallographic observation of two conformations of meropenem in SHV-1., Nukaga M, Bethel CR, Thomson JM, Hujer AM, Distler A, Anderson VE, Knox JR, Bonomo RA, J Am Chem Soc. 2008 Sep 24;130(38):12656-62. Epub 2008 Aug 30. PMID: 18761444

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