phenylglyoxylate + NAD+ + CoA = benzoyl-S-CoA + CO2 + NADH
Requires thiamine diphosphate as cofactor. The enzyme from the denitrifying bacterium Azoarcus evansii is specific for phenylglyoxylate. 2-Oxoisovalerate is oxidized at 15% of the rate for phenylglyoxylate. Also reduces viologen dyes. Contains iron-sulfur centres and FAD.
Hirsch, W., Schägger, H. and Fuchs, G. Phenylglyoxylate:NAD+ oxidoreductase (CoA benzoylating), a new enzyme of anaerobic phenylalanine metabolism in the denitrifying bacterium Axoarcus evansii. Eur. J. Biochem.251 (1998) 907–915. [PMID: 9490067]