go_id,ontology,go_term,term_definition,evidence
GO:0000033,MF,"alpha-1,3-mannosyltransferase activity","Catalysis of the transfer of a mannose residue to an oligosaccharide, forming an alpha-(1->3) linkage.",IMP
GO:0004583,MF,"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.",IEA
GO:0005789,CC,"endoplasmic reticulum membrane","The lipid bilayer surrounding the endoplasmic reticulum.",IEA
GO:0006487,BP,"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.",IDA
GO:0006488,BP,"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
GO:0006490,BP,"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
GO:0016021,CC,"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
GO:0042281,MF,"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
GO:0097502,BP,mannosylation,"The covalent attachment of a mannose residue to a substrate molecule.",IEA