Citrobacter diversus ULA-27 beta-lactamases. Improved purification and general properties.

G. Amicosante, A. Oratore, N. Franceschini, M. Maccarrone, R. Strom, M. Galleni, J. M. Frère

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Abstract

Two chromosome-encoded beta-lactamases have been purified from Citrobacter diversus ULA-27. They exhibited slightly different isoelectric points (6.8 and 6.2) and very similar Mr values (congruent to 29,000). Their specificity spectrum was rather wide, since they hydrolysed some cephalosporins with kcat: values similar to those observed with the best penicillin substrates. Cloxacillin, methicillin and imipenem were hydrolysed very slowly. Hydrolysis of azthreonam could not be detected.

Original languageEnglish
Pages (from-to)885-890
Number of pages6
JournalBiochemical Journal
Volume254
Issue number3
Publication statusPublished - Sep 15 1988

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ASJC Scopus subject areas

  • Biochemistry

Cite this

Amicosante, G., Oratore, A., Franceschini, N., Maccarrone, M., Strom, R., Galleni, M., & Frère, J. M. (1988). Citrobacter diversus ULA-27 beta-lactamases. Improved purification and general properties. Biochemical Journal, 254(3), 885-890.