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ENZYME entry: EC 2.1.1.294

Accepted Name
3-O-phospho-polymannosyl GlcNAc-diphospho-ditrans,octacis-undecaprenol 3-phospho-methyltransferase.
Reaction catalysed
3-O-phospho-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)](n)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-GlcNAc-di-trans,octa-cis-undecaprenyl diphosphate + S-adenosyl-L-methionine <=> 3-O-methylphospho-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)](n)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-GlcNAc-di-trans,octa-cis-undecaprenyl diphosphate + S-adenosyl-L-homocysteine
Comment(s)
  • The enzyme is involved in the biosynthesis of the polymannose O-polysaccharide in the outer leaflet of the membrane of Escherichia coli serotype O9a.
  • O-polysaccharide structures vary extensively because of differences in the number and type of sugars in the repeat unit.
  • The dual kinase/methylase WbdD also catalyzes the preceding phosphorylation of alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-[alpha-D- Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man- (1->2)]N-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)- alpha-D-GlcNAc-diphospho-ditrans,octacis-undecaprenol (cf. EC 2.7.1.181).
Cross-references
BRENDA2.1.1.294
EC2PDB2.1.1.294
ExplorEnz2.1.1.294
PRIAM enzyme-specific profiles2.1.1.294
KEGG Ligand Database for Enzyme Nomenclature2.1.1.294
IUBMB Enzyme Nomenclature2.1.1.294
IntEnz2.1.1.294
MEDLINEFind literature relating to 2.1.1.294
MetaCyc2.1.1.294
Rhea expert-curated reactions2.1.1.294
UniProtKB/Swiss-Prot
Q47592, WBDD2_ECOLX;  J7I4B7, WBDD_ECOLX;  

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