EC 2.1.1.84 - Methylquercetagetin 6-O-methyltransferase

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IntEnz Enzyme Nomenclature
EC 2.1.1.84

Names

Accepted name:
methylquercetagetin 6-O-methyltransferase
Other names:
6-OMT
flavonol 6-O-methyltransferase
flavonol 6-methyltransferase
S-adenosyl-L-methionine:3',4',5,6-tetrahydroxy-3,7-dimethoxyflavone 6-O-methyltransferase
Systematic name:
S-adenosyl-L-methionine:5,6,3',4'-tetrahydroxy-3,7-dimethoxyflavone 6-O-methyltransferase

Reaction

Comments:

The enzymes from Chrysosplenium americanum also methylates 3,7,3'-trimethylquercetagetin at the 6-position. Does not act on flavones, dihydroflavonols, or their glucosides.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0030759
CAS Registry Number: 96477-60-0

References

  1. De Luca, V. and Ibrahim, R.K.
    Enzymatic synthesis of polymethylated flavonols in Chrysosplenium americanum. I. Partial purification and some properties of S-adenosyl-L-methionine:flavonol 3-, 6-, 7-, and 4'-O-methyltransferases.
    Arch. Biochem. Biophys. 238: 596-605 (1985). [PMID: 3994393]
  2. De Luca, V. and Ibrahim, R.K.
    Enzymatic synthesis of polymethylated flavonols in Chrysosplenium americanum. II. Substrate interaction and product inhibition studies of flavonol 3-, 6-, and 4'-O-methyltransferases.
    Arch. Biochem. Biophys. 238: 606-618 (1985). [PMID: 3994394]

[EC 2.1.1.84 created 1989]