Tags: Enzyme.
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-246-trihydroxy-5-methylphenyl)-3-hydroxy-6- methyl-24-cyclohexadien-1-one + NAD+ (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.