3D4F:
reference: Strategic design of an effective beta-lactamase inhibitor: LN-1-255, a 6-alkylidene-2'-substituted penicillin sulfone., Pattanaik P, Bethel CR, Hujer AM, Hujer KM, Distler AM, Taracila M, Anderson VE, Fritsche TR, Jones RN, Pagadala SR, van den Akker F, Buynak JD, Bonomo RA, J Biol Chem. 2009 Jan 9;284(2):945-53. Epub 2008 Oct 27. PMID: 18955486

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