8-hydroxyquercetin 8-O-methyltransferase

8-hydroxyquercitin 8-O-methyltransferase
Identifiers
EC number 2.1.1.88
CAS number 99775-17-4
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 8-hydroxyquercetin 8-O-methyltransferase (EC 2.1.1.88) is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + 3,5,7,8,3',4'-hexahydroxyflavone \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 [mis-spelt].

References

    This article is issued from Wikipedia - version of the Wednesday, March 30, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.