| apigenin 4'-O-methyltransferase | |
| Ec Number: | 2.1.1.75 |
| Cas Number: | 118251-36-8 |
| Go Code: | 0030754 |
In enzymology, an apigenin 4'-O-methyltransferase is an enzyme that catalyzes the chemical reaction
S-adenosyl-L-methionine + 5,7,4'-trihydroxyflavone
\rightleftharpoons
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.