12-hydroxydihydrochelirubine 12-O-methyltransferase

{{Short description|Class of enzymes}}

{{infobox enzyme

| Name = 12-hydroxydihydrochelirubine 12-O-methyltransferase

| EC_number = 2.1.1.120

| CAS_number = 158736-40-4

| GO_code = 0030780

| image =

| width =

| caption =

}}

In enzymology, a 12-hydroxydihydrochelirubine 12-O-methyltransferase ({{EC number|2.1.1.120}}) is an enzyme that catalyzes the chemical reaction

:S-adenosyl-L-methionine + 12-hydroxydihydrochelirubine $\backslash rightleftharpoons$ S-adenosyl-L-homocysteine + dihydromacarpine

Thus, the two substrates of this enzyme are S-adenosyl methionine and 12-hydroxydihydrochelirubine, whereas its two products are S-adenosylhomocysteine and dihydromacarpine.

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:12-hydroxydihydrochelirubine 12-O-methyltransferase. This enzyme participates in alkaloid biosynthesis i.