ⓘ Putrescine N-methyltransferase. In enzymology, a putrescine N-methyltransferase is an enzyme that catalyzes the chemical reaction S-adenosyl-L-methionine + putr ..

                                     

ⓘ Putrescine N-methyltransferase

In enzymology, a putrescine N-methyltransferase is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + putrescine ⇌ {\displaystyle \rightleftharpoons } S-adenosyl-L-homocysteine + N-methylputrescine

Thus, 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. The systematic name of this enzyme class is S-adenosyl-L-methionine:putrescine N-methyltransferase. This enzyme is also called putrescine methyltransferase. This enzyme participates in alkaloid biosynthesis ii.

This enzyme is important in the synthesis of many plant alkaloids. It evolved from spermidine synthase.

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