(S)-usnate reductase

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(S)-usnate reductase
Identifiers
EC number 1.1.1.199
CAS number 77237-99-1
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

In enzymology, a (S)-usnate reductase (EC 1.1.1.199) is an enzyme that catalyzes the chemical reaction

(6R)-2-acetyl-6-(3-acetyl-2,4,6-trihydroxy-5-methylphenyl)-3-hydroxy-6- methyl-2,4-cyclohexadien-1-one + NAD+ \rightleftharpoons (S)-usnic acid + NADH + H+

In the reverse direction, (S)-usnate is reduced by NADH with cleavage of the ether bond to form a 7-hydroxy group.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is reduced-(S)-usnate:NAD+ oxidoreductase (ether-bond-forming). This enzyme is also called L-usnic acid dehydrogenase.

References[edit]

  • Barbini N, Gorini G, Ferrucci L, Biggeri A (2005). "[Analysis of arterial hypertension and work in the epidemiologic study "Aging, Health and Work"]". Epidemiol. Prev. 29 (3–4): 160–165. PMID 16454408.