2BMI:
reference: X-ray structure of the ZnII beta-lactamase from Bacteroides fragilis in an orthorhombic crystal form., Carfi A, Duee E, Paul-Soto R, Galleni M, Frere JM, Dideberg O, Acta Crystallogr D Biol Crystallogr 1998 Jan 1;54 ( Pt 1):45-57. PMID: 9761816

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