In enzymology, an apigenin 4'-O-methyltransferase (EC 2.1.1.75) is an enzyme that catalyzes the chemical reaction
| apigenin 4'-O-methyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.1.1.75 | ||||||||
| CAS no. | 118251-36-8 | ||||||||
| 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 5,7,4'-trihydroxyflavone S-adenosyl-L-homocysteine 4'-methoxy-5,7-dihydroxyflavone
Thus, the two substrates of this enzyme are S-adenosyl methionine and 5,7,4'-trihydroxyflavone (apigenin), whereas its two products are S-adenosylhomocysteine and 4'-methoxy-5,7-dihydroxyflavone (acacetin).
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:5,7,4'-trihydroxyflavone 4'-O-methyltransferase. Other names in common use include flavonoid O-methyltransferase, and flavonoid methyltransferase. This enzyme participates in flavonoid biosynthesis.
References
edit- Kuroki G, Poulton JE (1981). "The para-O-methylation of apigenin to acacetin by cell-free extracts of Robinia pseudoacacia L". Z. Naturforsch. C: Biosci. 36 (11–12): 916–920. doi:10.1515/znc-1981-11-1202.11–12&rft.pages=916-920&rft.date=1981&rft_id=info:doi/10.1515/znc-1981-11-1202&rft.aulast=Kuroki&rft.aufirst=G&rft.au=Poulton, JE&rft_id=https://doi.org/10.1515%2Fznc-1981-11-1202&rfr_id=info:sid/en.wikipedia.org:Apigenin 4'-O-methyltransferase" class="Z3988">
