Biology:Polysaccharide O-methyltransferase

From HandWiki
Short description: Enzyme
polysaccharide O-methyltransferase
Identifiers
EC number2.1.1.18
CAS number37205-56-4
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

In enzymology, a polysaccharide O-methyltransferase (EC 2.1.1.18) is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + 1,4-alpha-D-glucooligosaccharide [math]\displaystyle{ \rightleftharpoons }[/math] S-adenosyl-L-homocysteine + oligosaccharide containing 6-methyl-D-glucose units

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.

References

  • "Biosynthesis of a mycobacterial lipopolysaccharide. Properties of the polysaccharide methyltransferase". J. Biol. Chem. 245 (16): 4213–23. 1970. PMID 5503262. 

Gene ontology (GO) codes