3-hydroxyanthranilate oxidase

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3-hydroxyanthranilate oxidase

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3-hydroxyanthranilate oxidase

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In enzymology, a 3-hydroxyanthranilate oxidase (EC 1.10.3.5) is an enzyme that catalyzes the chemical reaction

3-hydroxyanthranilate + O₂ $\rightleftharpoons$ 6-imino-5-oxocyclohexa-1,3-dienecarboxylate + H₂O₂

Thus, the two substrates of this enzyme are 3-hydroxyanthranilate and O₂, whereas its two products are 6-imino-5-oxocyclohexa-1,3-dienecarboxylate and H₂O₂.

This enzyme belongs to the family of oxidoreductases, specifically those acting on diphenols and related substances as donor with oxygen as acceptor. The systematic name of this enzyme class is 3-hydroxyanthranilate:oxygen oxidoreductase. This enzyme is also called 3-hydroxyanthranilic acid oxidase.

References

Morgan LR Jr, Weimorts DM, Aubert CC (1965). "Oxidation Of 3-hydroxyanthranilic acid by a soluble liver fraction from poikilothermic vertebrates". Biochim. Biophys. Acta. 100: 393–402. PMID 14347936.

Metabolism: amino acid metabolism · synthesis and catabolism enzymes (essential in CAPS)

K→acetyl-CoA

LYSINE→	Saccharopine dehydrogenase · Glutaryl-CoA dehydrogenase

LEUCINE→	Branched chain aminotransferase · Branched-chain alpha-keto acid dehydrogenase complex · Isovaleryl coenzyme A dehydrogenase · Methylcrotonyl-CoA carboxylase · Methylglutaconyl-CoA hydratase · 3-hydroxy-3-methylglutaryl-CoA lyase

TRYPTOPHAN→	Indoleamine 2,3-dioxygenase/Tryptophan 2,3-dioxygenase · Arylformamidase · Kynureninase · 3-hydroxyanthranilate oxidase · Aminocarboxymuconate-semialdehyde decarboxylase · Aminomuconate-semialdehyde dehydrogenase

PHENYLALANINE→tyrosine→	(see below)

G→pyruvate
→citrate

glycine→serine→	Serine hydroxymethyltransferase · Serine dehydratase glycine→creatine: Guanidinoacetate N-methyltransferase · Creatine kinase

alanine→	Alanine transaminase

cysteine→	D-cysteine desulfhydrase

threonine→	L-threonine dehydrogenase

G→glutamate→
α-ketoglutarate


HISTIDINE→	Histidine ammonia-lyase · Urocanate hydratase · Formiminotransferase cyclodeaminase

proline→	Proline oxidase · Pyrroline-5-carboxylate reductase · 1-Pyrroline-5-carboxylate dehydrogenase/ALDH4A1 · PYCR1

arginine→	Ornithine aminotransferase · Ornithine decarboxylase · Agmatinase

→alpha-ketoglutarate→TCA	Glutamate dehydrogenase

Other	cysteine+glutamate→glutathione: Gamma-glutamylcysteine synthetase · Glutathione synthetase · Gamma-glutamyl transpeptidase glutamate→glutamine: Glutamine synthetase · Glutaminase

G→propionyl-CoA→
succinyl-CoA

VALINE→	Branched chain aminotransferase · Branched-chain alpha-keto acid dehydrogenase complex · Enoyl-CoA hydratase · 3-hydroxyisobutyryl-CoA hydrolase · 3-hydroxyisobutyrate dehydrogenase · Methylmalonate semialdehyde dehydrogenase

ISOLEUCINE→	Branched chain aminotransferase · Branched-chain alpha-keto acid dehydrogenase complex · 3-hydroxy-2-methylbutyryl-CoA dehydrogenase

METHIONINE→	generation of homocysteine: Methionine adenosyltransferase · Adenosylhomocysteinase regeneration of methionine: Methionine synthase/Homocysteine methyltransferase · Betaine-homocysteine methyltransferase conversion to cysteine: Cystathionine beta synthase · Cystathionine gamma-lyase

THREONINE→	Threonine aldolase

→succinyl-CoA→TCA	Propionyl-CoA carboxylase · Methylmalonyl CoA epimerase · Methylmalonyl-CoA mutase

G→fumarate


PHENYLALANINE→tyrosine→	Phenylalanine hydroxylase · Tyrosine aminotransferase · 4-Hydroxyphenylpyruvate dioxygenase · Homogentisate 1,2-dioxygenase · Fumarylacetoacetate hydrolase tyrosine→melanin: Tyrosinase

G→oxaloacetate


asparagine→aspartate→	Asparaginase/Asparagine synthetase · Aspartate transaminase

M: MET

mt, k, c/g/r/p/y/i, f/h/s/l/o/e, a/u, n, m

k, cgrp/y/i, f/h/s/l/o/e, au, n, m, epon

m(A16/C10),i(k, c/g/r/p/y/i, f/h/s/o/e, a/u, n, m)

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