Expasy logo

ENZYME

ENZYME entry: EC 2.1.1.83

PURL: https://purl.expasy.org/enzyme/EC/2.1.1.83
Accepted Name
3,7-dimethylquercetin 4'-O-methyltransferase
Alternative Name(s)
3,7-dimethylquercitin 4'-O-methyltransferase
4'-OMT
flavonol 4'-methyltransferase
flavonol 4'-O-methyltransferase
Reaction catalysed
3',4',5-trihydroxy-3,7-dimethoxyflavone + S-adenosyl-L-methionine = 3',5-dihydroxy-3,4',7-trimethoxyflavone + S-adenosyl-L-homocysteine + H(+)
Comment(s)
  • 3,7-Dimethylquercetagetin can also act as acceptor.
  • Involved with EC 2.1.1.76 and EC 2.1.1.82 in the methylation of quercetin to 3,7,4'-trimethylquercetin in Chrysosplenium americanum.
  • Does not act on flavones, dihydroflavonols, or their glucosides.
Cross-references
BRENDA2.1.1.83
EC2PDB2.1.1.83
ExplorEnz2.1.1.83
KEGG Ligand Database for Enzyme Nomenclature2.1.1.83
IUBMB Enzyme Nomenclature2.1.1.83
MEDLINEFind literature relating to 2.1.1.83
MetaCyc2.1.1.83
Rhea expert-curated reactions2.1.1.83

View entry in original ENZYME format
View entry in raw text format (no links)
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.1.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.1.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-