ID   1.3.99.18
DE   quinaldate 4-oxidoreductase.
AN   quinaldic acid 4-oxidoreductase.
CA   A + H2O + quinaldate = AH2 + kynurenate.
CC   -!- The enzyme from Pseudomonas sp. AK2 also acts on quinoline-8-
CC       carboxylate, whereas that from Serratia marcescens 2CC-1 will oxidize
CC       nicotinate; quinaldate is a substrate for both of these enzymes.
CC   -!- 2,4,6-Trinitrobenzene sulfonate acid, 1,4-benzoquinone, 1,2-
CC       naphthoquinone, nitroblue tetrazolium (NBT), thionine and menadione
CC       will serve as an electron acceptor for the former enzyme and
CC       ferricyanide for the latter; Meldola blue, iodonitrotetrazolium
CC       chloride (INT), phenazine methosulfate (PMS), 2,6-
CC       dichlorophenolindophenol (DCPIP) and cytochrome c will act as
CC       electron acceptors for both.
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