To improve security and privacy, we are moving our web pages and services from HTTP to HTTPS.
To give users of web services time to transition to HTTPS, we will support separate HTTP and HTTPS services until the end of 2017.
From January 2018 most HTTP traffic will be automatically redirected to HTTPS. [more...]
View this page in https

ENZYME entry: 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
S-adenosyl-L-methionine + 3',4',5-trihydroxy-3,7-dimethoxyflavone <=> S-adenosyl-L-homocysteine + 3',5-dihydroxy-3,4',7-trimethoxyflavone
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
PRIAM enzyme-specific profiles2.1.1.83
KEGG Ligand Database for Enzyme Nomenclature2.1.1.83
IUBMB Enzyme Nomenclature2.1.1.83
IntEnz2.1.1.83
MEDLINEFind literature relating to 2.1.1.83
MetaCyc2.1.1.83

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.-.-.-