The Enzyme Database

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Accepted name: 8-hydroxyquercetin 8-O-methyltransferase
Reaction: S-adenosyl-L-methionine + 3,5,7,8,3′,4′-hexahydroxyflavone = S-adenosyl-L-homocysteine + 3,5,7,3′,4′-pentahydroxy-8-methoxyflavone
Other name(s): flavonol 8-O-methyltransferase; flavonol 8-methyltransferase; S-adenosyl-L-methionine:3,3′,4′,5,7,8-hexahydroxyflavone 8-O-methyltransferase; 8-hydroxyquercitin 8-O-methyltransferase [mis-spelt]
Systematic name: S-adenosyl-L-methionine:3,5,7,8,3′,4′-hexahydroxyflavone 8-O-methyltransferase
Comments: Also acts on 8-hydroxykaempferol, but not on the glycosides of 8-hydroxyflavonols. An enzyme from the flower buds of Lotus corniculatus.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 99775-17-4
1.  Jay, M., De Luca, V. and Ibrahim, R.K. Purification, properties and kinetic mechanism of flavonol 8-O-methyltransferase from Lotus corniculatus L. Eur. J. Biochem. 153 (1985) 321–325. [DOI] [PMID: 4076180]
[EC created 1989]

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