| 1BLS: reference: Crystallographic structure of a phosphonate derivative of the Enterobacter cloacae P99 cephalosporinase: mechanistic interpretation of a beta-lactamase transition-state analog., Lobkovsky E, Billings EM, Moews PC, Rahil J, Pratt RF, Knox JR, Biochemistry 1994 Jun 7;33(22):6762-72. PMID: 8204611 |
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