Quinoline-4-carboxylate 2-oxidoreductase

{{infobox enzyme

| Name = quinoline-4-carboxylate 2-oxidoreductase

| EC_number = 1.3.99.19

| CAS_number = 175780-18-4

| GO_code = 0047123

| image =

| width =

| caption =

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In enzymology, a quinoline-4-carboxylate 2-oxidoreductase ({{EC number|1.3.99.19}}) is an enzyme that catalyzes the chemical reaction

:quinoline-4-carboxylate + acceptor + H₂O $\backslash rightleftharpoons$ 2-oxo-1,2-dihydroquinoline-4-carboxylate + reduced acceptor

The 3 substrates of this enzyme are quinoline-4-carboxylate, acceptor, and H₂O, whereas its two products are 2-oxo-1,2-dihydroquinoline-4-carboxylate and reduced acceptor.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with other acceptors. The systematic name of this enzyme class is quinoline-4-carboxylate:acceptor 2-oxidoreductase (hydroxylating). Other names in common use include quinaldic acid 4-oxidoreductase, and quinoline-4-carboxylate:acceptor 2-oxidoreductase (hydroxylating).