BP

GO:0006487

protein N-linked glycosylation

A protein glycosylation process in which a carbohydrate or carbohydrate derivative unit is added to a protein via the N4 atom of peptidyl-asparagine, the omega-N of arginine, or the N1' atom peptidyl-tryptophan.

IMP

BP

GO:0006488

dolichol-linked oligosaccharide biosynthetic process

The chemical reactions and pathways resulting in the formation of dolichol-linked oligosaccharide, usually by a stepwise addition of glycosyl chains to endoplasmic reticulum membrane-bound dolichol-P.

TAS

BP

GO:0006490

oligosaccharide-lipid intermediate biosynthetic process

The chemical reactions and pathways resulting in the formation of an oligosaccharide-lipid intermediate, such as a molecule of dolichol-P-man or dolicol-P-Glc used in N-linked glycosylation.

IBA

BP

GO:0097502

mannosylation

The covalent attachment of a mannose residue to a substrate molecule.

IEA

CC

GO:0005789

endoplasmic reticulum membrane

The lipid bilayer surrounding the endoplasmic reticulum.

IBA|TAS

CC

GO:0016021

integral component of membrane

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

IEA

MF

GO:0000033

alpha-1,3-mannosyltransferase activity

Catalysis of the transfer of a mannose residue to an oligosaccharide, forming an alpha-(1->3) linkage.

IMP

MF

GO:0004583

dolichyl-phosphate-glucose-glycolipid alpha-glucosyltransferase activity

Catalysis of the transfer of an alpha-D-glucosyl residue from dolichyl-phosphate D-glucose into a membrane lipid-linked oligosaccharide.

TAS

MF

GO:0042281

dolichyl pyrophosphate Man9GlcNAc2 alpha-1,3-glucosyltransferase activity

Catalysis of the addition of the first glucose residue to the lipid-linked oligosaccharide precursor for N-linked glycosylation; the transfer of glucose from dolichyl phosphate glucose (Dol-P-Glc) on to the lipid-linked oligosaccharide Man(9)GlcNAc(2)-PP-Dol.

IBA