Microbial glyoxalase enzymes: metalloenzymes controlling cellular levels of methylglyoxal - PubMed (original) (raw)

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Microbial glyoxalase enzymes: metalloenzymes controlling cellular levels of methylglyoxal

Nicole Sukdeo et al. Drug Metabol Drug Interact. 2008.

Abstract

The glyoxalase system consists of two enzymes, glyoxalase I and glyoxalase II. This system is important in the detoxification of methylglyoxal. Detailed studies have determined that the glyoxalase I from Escherichia coli, Neisseria meningitidis and Yersinia pestis are maximally activated by Ni2+ and Co2+, and are inactive with Zn2+, a situation quite different from the human glyoxalase I enzyme, which is activated by Zn2+. Recent studies on the Pseudomonas aeruginosa genome have led to the characterization of three different glyoxalase I enzymes, two of which follow a Ni2+/Co2+ activation profile and the third exhibits a human-like preference for Zn2+.

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