KEGG   ENZYME: 2.1.1.68Help
Entry
EC 2.1.1.68                 Enzyme                                 

Name caffeate O-methyltransferase;
caffeate methyltransferase;
caffeate 3-O-methyltransferase;
S-adenosyl-L-methionine:caffeic acid-O-methyltransferase
Class Transferases;
Transferring one-carbon groups;
Methyltransferases
BRITE hierarchy
Sysname S-adenosyl-L-methionine:3,4-dihydroxy-trans-cinnamate
3-O-methyltransferase
Reaction(IUBMB) S-adenosyl-L-methionine + 3,4-dihydroxy-trans-cinnamate =
S-adenosyl-L-homocysteine + 3-methoxy-4-hydroxy-trans-cinnamate
[RN:R03366]
Reaction(KEGG) R03366;
(other) R02379 R06574 R06575 R06576 R06577
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Substrate S-adenosyl-L-methionine [CPD:C00019];
3,4-dihydroxy-trans-cinnamate [CPD:C01197]
Product S-adenosyl-L-homocysteine [CPD:C00021];
3-methoxy-4-hydroxy-trans-cinnamate [CPD:C01494]
Comment 3,4-Dihydroxybenzaldehyde and catechol can act as acceptors, but
more slowly.
Pathway PATH: ec00940  Phenylpropanoid biosynthesis
PATH: ec01061  Biosynthesis of phenylpropanoids
PATH: ec01063  Biosynthesis of alkaloids derived from shikimate
               pathway
Orthology KO: K13066  caffeic acid 3-O-methyltransferase
Genes POP: POPTR_824484(COMT1)
Taxonomy
Structures PDB: 1KYW  1KYZ  
Reference
  Authors

  Title

  Journal
  Organism
1  [PMID:4472044]
Ebel J, Schaller-Hekeler B, Knobloch KH, Wellman E, Grisebach H,
Hahlbrock K.
Coordinated changes in enzyme activities of phenylpropanoid
metabolism during the growth of soybean cell suspension cultures.
Biochim. Biophys. Acta. 362 (1974) 417-24.
Glycine max
Reference
  Authors
  Title

  Journal
  Organism
2  [PMID:241400]
Poulton JE, Butt VS.
Purification and properties of S-adenosyl-L-methionine: caffeic acid
O-methyltransferase from leaves of spinach beet (Beta vulgaris L).
Biochim. Biophys. Acta. 403 (1975) 301-14.
Beta vulgaris
Reference
  Authors
  Title

  Journal
3
Shimada, M., Kuroda, H. and Higuchi, T.
Evidence for the formation of methoxyl groups of ferulic and sinapic
acid in Bambusa by the same O-methyltransferase.
Phytochemistry 12 (1973) 2873-2875.
Other DBs ExplorEnz - The Enzyme Database: 2.1.1.68
IUBMB Enzyme Nomenclature: 2.1.1.68
ExPASy - ENZYME nomenclature database: 2.1.1.68
BRENDA, the Enzyme Database: 2.1.1.68
CAS: 50936-45-3

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