Tags: Enzyme.
In enzymology a magnesium protoporphyrin IX methyltransferase (EC 2.1.1.11) is an enzyme that catalyzes the chemical reactionS-adenosyl-L-methionine + magnesium protoporphyrin IX S-adenosyl-L-homocysteine + magnesium protoporphyrin IX 13-methyl esterThus the two substrates of this enzyme are S-adenosyl methionine and magnesium protoporphyrin IX whereas its two products are S-adenosylhomocysteine and magnesium protoporphyrin IX 13-methyl ester.This enzyme belongs to the family of transferases specifically those transferring one-carbon group methyltransferases.