In enzymology, an isoflavone 4'-O-methyltransferase (EC 2.1.1.46) is an enzyme that catalyzes the chemical reaction
| isoflavone 4'-O-methyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.1.1.46 | ||||||||
| CAS no. | 55071-80-2 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
- S-adenosyl-L-methionine + an isoflavone S-adenosyl-L-homocysteine + a 4'-O-methylisoflavone
Thus, the two substrates of this enzyme are S-adenosyl methionine and isoflavone, whereas its two products are S-adenosylhomocysteine and 4'-O-methylisoflavone.
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:isoflavone 4'-O-methyltransferase. Other names in common use include 4'-hydroxyisoflavone methyltransferase, isoflavone methyltransferase, and isoflavone O-methyltransferase. This enzyme participates in isoflavonoid biosynthesis.
References
edit- Wengenmayer H, Ebel J, Grisebach H (1974). "Purification and properties of a S-adenosylmethionine: isoflavone 4'-O-methyltransferase from cell suspension cultures of Cicer arietinum L". Eur. J. Biochem. 50 (1): 135–43. doi:10.1111/j.1432-1033.1974.tb03881.x. PMID 4452353.
