ⓘ 8-hydroxyquercetin 8-O-methyltransferase. In enzymology, a 8-hydroxyquercetin 8-O-methyltransferase is an enzyme that catalyzes the chemical reaction S-adenosyl ..

                                     

ⓘ 8-hydroxyquercetin 8-O-methyltransferase

In enzymology, a 8-hydroxyquercetin 8-O-methyltransferase is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + 3.5.7.8.3.4-hexahydroxyflavone ⇌ {\displaystyle \rightleftharpoons } S-adenosyl-L-homocysteine + 3.5.7.3.4-pentahydroxy-8-methoxyflavone

Thus, the two substrates of this enzyme are S-adenosyl methionine and 3.5.7.8.3.4-hexahydroxyflavone gossypetin, whereas its two products are S-adenosylhomocysteine and 3.5.7.3.4-pentahydroxy-8-methoxyflavone.

This enzyme belongs to the family of transferases, specifically those transferring one-carbon group methyltransferases. The systematic name of this enzyme class is S-adenosyl-L-methionine:3.5.7.8.3.4-hexahydroxyflavone 8-O-methyltransferase. Other names in common use include flavonol 8-O-methyltransferase, flavonol 8-methyltransferase, S-adenosyl-L-methionine:3.3.4.5.7.8-hexahydroxyflavone, 8-O-methyltransferase, and 8-hydroxyquercitin 8-O-methyltransferase.

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