“8-hydroxyquercetin 8-O-methyltransferase”的意思、由来-开放百科全书

词条

8-hydroxyquercetin 8-O-methyltransferase

释义

References

{{enzyme
| Name = 8-hydroxyquercitin 8-O-methyltransferase
| EC_number = 2.1.1.88
| CAS_number = 99775-17-4
| IUBMB_EC_number = 2/1/1/88
| GO_code = 0030761
| image =
| width =
| caption =
}}

In enzymology, a 8-hydroxyquercetin 8-O-methyltransferase ({{EC number|2.1.1.88}}) is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + 3,5,7,8,3',4'-hexahydroxyflavone 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

{{cite journal | vauthors = Jay M, De Luca V, Ibrahim RK | title = Purification, properties and kinetic mechanism of flavonol 8-O-methyltransferase from Lotus corniculatus L | journal = European Journal of Biochemistry | volume = 153 | issue = 2 | pages = 321–5 | date = December 1985 | pmid = 4076180 | doi = 10.1111/j.1432-1033.1985.tb09304.x }}

2 : EC 2.1.1|Enzymes of unknown structure

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