2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate reductase

Thus, the two substrates of this enzyme are 2,6-dioxo-6-phenylhexanoate and NADP⁺, whereas its 3 products are 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate, NADPH, and H⁺.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 2,6-dioxo-6-phenylhexanoate:NADP+ Delta2-oxidoreductase. Other names in common use include 2-hydroxy-6-oxo-phenylhexa-2,4-dienoate (reduced nicotinamide, and adenine dinucleotide phosphate) reductase.

References

Omori T, Ishigooka H, Minoda Y (1986). "Purification and some properties of 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoic acid(HOPDA) reducing enzyme from Pseudomonas cruciviae S93B1 involved in the degradation of biphenyl". Agric. Biol. Chem. 50: 1513–1518. doi:10.1271/bbb1961.50.1513.

Oxidoreductases: CH–CH oxidoreductases (EC 1.3)

1.3.1: NAD/NADP acceptor	Enoyl-acyl carrier protein reductase/Enoyl ACP reductase 7-Dehydrocholesterol reductase Biliverdin reductase 2,4 Dienoyl-CoA reductase Dihydroxymethyloxo-tetrahydroquinoline dehydrogenase

1.3.3: Oxygen acceptor	Dihydroorotate dehydrogenase Coproporphyrinogen III oxidase Protoporphyrinogen oxidase Bilirubin oxidase Acyl-CoA oxidase Dihydrouracil oxidase Tetrahydroberberine oxidase Secologanin synthase Tryptophan alpha,beta-oxidase Pyrroloquinoline-quinone synthase L-galactonolactone oxidase

1.3.5: Quinone	Succinate dehydrogenase SDHA SDHB SDHC SDHD

1.3.99: Other acceptors	Fumarate reductase Butyryl-CoA dehydrogenase Acyl CoA dehydrogenase ACADSB ACADS 5α-reductase SRD5A1 SRD5A2 SRD5A3 Glutaryl-CoA dehydrogenase Isovaleryl coenzyme A dehydrogenase 3-oxo-5beta-steroid 4-dehydrogenase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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