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  • Title: Purification and properties of a beta-lactamase produced by Branhamella catarrhalis.
    Author: Yokota E, Fujii T, Sato K, Inoue M, Mitsuhashi S.
    Journal: Antimicrob Agents Chemother; 1986 Apr; 29(4):696-8. PubMed ID: 3486631.
    Abstract:
    A beta-lactamase from Branhamella catarrhalis was purified by column chromatography. The purified enzyme hydrolyzed penicillins, such as ampicillin, carbenicillin, and piperacillin, more rapidly than cephalosporins. Furthermore, the enzyme hydrolyzed cefotaxime and cefmenoxime. The molecular weight of the enzyme was 33,000. The pI was 5.4.
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