1VM1:
reference: Inhibition of the SHV-1 beta-lactamase by sulfones: crystallographic observation of two reaction intermediates with tazobactam., Kuzin AP, Nukaga M, Nukaga Y, Hujer A, Bonomo RA, Knox JR, Biochemistry 2001 Feb 13;40(6):1861-6. PMID: 11327849

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