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Maleylacetate reductase is involved in many aromatic compounds degradation pathways of aerobic microbes Maleylacetate reductase (MAR) plays an important role in the degradation of aromatic compounds in aerobic microbes. In fungi and yeasts, the enzyme is involved in the catabolism of compounds such as phenol, tyrosine, benzoate, 4-hydroxybenzoate and resorcinol. In bacteria, the enzyme contributes to the degradation of resorcinol, 2,4-dihydroxybenzoate ([beta]-resorcylate) and 2,6-dihydroxybenzoate ([gamma]-resorcylate) via hydroxyquinol and maleylacetate. Maleylacetate reductase catalyzes NADH- or NADPH-dependent reduction, at the carbon-carbon double bond, of maleylacetate or 2-chloromaleylacetate to 3-oxoadipate. In the case of 2-chloromaleylacetate, MAR initially catalyzes the NAD(P)H-dependent dechlorination to maleylacetate, which is then reduced to 3-oxoadipate. This enzyme is a homodimer and is inhibited by thiol-blocking reagents such as p-chloromercuribenzoate and Hg++, indicating that the cysteine residue is probably necessary for the catalytic activity of maleylacetate reductase. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",