4QHC:
reference: Kinetic and Structural Characterization of the Interaction of 6-Methylidene Penem 2 with the beta-Lactamase from Mycobacterium tuberculosis., Hazra S, Kurz SG, Wolff K, Nguyen L, Bonomo RA, Blanchard JS, Biochemistry. 2015 Sep 15;54(36):5657-64. doi: 10.1021/acs.biochem.5b00698. Epub , 2015 Aug 31. PMID: 26237118

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