Harman Patil (Editor)

Quercetin 3 O methyltransferase

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EC number
  
2.1.1.76

IntEnz
  
IntEnz view

ExPASy
  
NiceZyme view

CAS number
  
75603-21-3

BRENDA
  
BRENDA entry

KEGG
  
KEGG entry

In enzymology, a quercetin 3-O-methyltransferase (EC 2.1.1.76) is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone

Thus, the two substrates of this enzyme are S-adenosyl methionine and 3,5,7,3',4'-pentahydroxyflavone, whereas its two products are S-adenosylhomocysteine and 3-methoxy-5,7,3',4'-tetrahydroxyflavone.

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:3,5,7,3',4'-pentahydroxyflavone 3-O-methyltransferase. Other names in common use include flavonol 3-O-methyltransferase, and flavonoid 3-methyltransferase. This enzyme participates in flavonoid biosynthesis.

References

Quercetin 3-O-methyltransferase Wikipedia


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