Aminomuconate-semialdehyde dehydrogenase

aminomuconate-semialdehyde dehydrogenase
aminomuconate-semialdehyde dehydrogenase tetramer, Pseudomonas
Identifiers
EC no.1.2.1.32
CAS no.37250-95-6
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In enzymology, an aminomuconate-semialdehyde dehydrogenase (EC 1.2.1.32) is an enzyme that catalyzes the chemical reaction

2-aminomuconate 6-semialdehyde + NAD+ + H2O {\displaystyle \rightleftharpoons } 2-aminomuconate + NADH + 2 H+

The 3 substrates of this enzyme are 2-aminomuconate 6-semialdehyde, NAD+, and H2O, whereas its 3 products are 2-aminomuconate, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with NAD+ or NADP+ as acceptor. This enzyme participates in 3 metabolic pathways: benzoic acid degradation via hydroxylation, tryptophan metabolism, and the degradation pathway for toluene and xylene.

Nomenclature

The systematic name of this enzyme class is 2-aminomuconate-6-semialdehyde:NAD+ 6-oxidoreductase. Other names in common use include 2-aminomuconate semialdehyde dehydrogenase, 2-hydroxymuconic acid semialdehyde dehydrogenase, 2-hydroxymuconate semialdehyde dehydrogenase, alpha-aminomuconic epsilon-semialdehyde dehydrogenase, alpha-hydroxymuconic epsilon-semialdehyde dehydrogenase, and 2-hydroxymuconic semialdehyde dehydrogenase.

References

Further reading

  • Ichiyama A, Nakamura S, Kawai H, Honjo T, Nishizuka Y, Hayaishi O, Senoh S (February 1965). "Studies on the metabolism of the benzene ring of tryptophan in mammalian tissues. II. enzymic formation of alpha-aminomuconic acid from 3-hydroxyanthranilic acid". The Journal of Biological Chemistry. 240: 740–9. PMID 14275130.
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Essential amino acids are in Capitals
Kacetyl-CoA
LYSINE
LEUCINE
TRYPTOPHAN
PHENYLALANINEtyrosine
  • (see below)
G
G→pyruvate
citrate
glycineserine
alanine
cysteine
threonine
G→glutamate
α-ketoglutarate
HISTIDINE
proline
arginine
alpha-ketoglutarate→TCA
Other
G→propionyl-CoA
succinyl-CoA
VALINE
ISOLEUCINE
METHIONINE
THREONINE
succinyl-CoA→TCA
G→fumarate
PHENYLALANINEtyrosine
G→oxaloacetate
asparagineaspartate
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