Xanthotoxol O-methyltransferase

In enzymology, a xanthotoxol O-methyltransferase (EC 2.1.1.93) is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + xanthotoxol S-adenosyl-L-homocysteine + O-methylxanthotoxol

Thus, the two substrates of this enzyme are S-adenosyl methionine and xanthotoxol, whereas its two products are S-adenosylhomocysteine and O-methylxanthotoxol.

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:xanthotoxol O-methyltransferase. This enzyme is also called xanthotoxol methyltransferase.

References

• Hauffe KD, Hahlbrock K and Scheel D (1986). "Elicitor-stimulated furanocoumarin biosynthesis in cultured parsley cells - S-adenosyl-L-methionine-bergaptol and S-adenosyl-L-methionine-xanthotoxol O-methyltransferases". Z. Naturforsch. C: Biosci. 41: 228–239.