Tags: Enzyme.
In enzymology a putrescine N-methyltransferase (EC 2.1.1.53) is an enzyme that catalyzes the chemical reactionS-adenosyl-L-methionine + putrescine S-adenosyl-L-homocysteine + N-methylputrescineThus the two substrates of this enzyme are S-adenosyl methionine and putrescine whereas its two products are S-adenosylhomocysteine and N-methylputrescine.This enzyme belongs to the family of transferases specifically those transferring one-carbon group methyltransferases.