tyramine N-methyltransferase

{{Short description|Class of enzymes}}

{{infobox enzyme

| Name = tyramine N-methyltransferase

| EC_number = 2.1.1.27

| CAS_number = 37256-96-5

| GO_code = 0030738

| image =

| width =

| caption =

}}

In enzymology, a tyramine N-methyltransferase ({{EC number|2.1.1.27}}) is an enzyme that catalyzes the chemical reaction

:S-adenosyl-L-methionine + tyramine $\backslash rightleftharpoons$ S-adenosyl-L-homocysteine + N-methyltyramine

Thus, the two substrates of this enzyme are S-adenosyl methionine and tyramine, whereas its two products are S-adenosylhomocysteine and N-methyltyramine.

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:tyramine N-methyltransferase. Other names in common use include DIB O-methyltransferase (3,5-diiodo-4-hydroxy-benzoic acid), S-adenosyl-methionine:tyramine N-methyltransferase, and tyramine methylpherase. This enzyme participates in tyrosine metabolism.