In enzymology, a polysaccharide O-methyltransferase (EC 2.1.1.18) is an enzyme that catalyzes the chemical reaction Thus, the two substrates of this enzyme are S-adenosyl methionine and 1,4-alpha-D-glucooligosaccharide, whereas its two products are S-adenosylhomocysteine and oligosaccharide containing 6-methyl-D-glucose units.
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:1,4-alpha-D-glucan 6-O-methyltransferase.
Other names in common use include polysaccharide methyltransferase, and acylpolysacharide 6-methyltransferase.
This EC 2.1 enzyme-related article is a stub.