go_id,ontology,go_term,term_definition,evidence
GO:0000139,CC,"Golgi membrane","The lipid bilayer surrounding any of the compartments of the Golgi apparatus.",IEA
GO:0003831,MF,"beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity","Catalysis of the reaction: UDP-galactose + N-acetyl-beta-D-glucosaminylglycopeptide = UDP + beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminylglycopeptide.",TAS
GO:0008378,MF,"galactosyltransferase activity","Catalysis of the transfer of a galactosyl group to an acceptor molecule, typically another carbohydrate or a lipid.",TAS
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:0016266,BP,"O-glycan processing","The stepwise addition of carbohydrate or carbohydrate derivative residues to the initially added O-linked residue (usually GalNAc) to form a core O-glycan structure.",TAS
GO:0018146,BP,"keratan sulfate biosynthetic process","The chemical reactions and pathways resulting in the formation of keratan sulfate, a glycosaminoglycan with repeat units consisting of beta-1,4-linked D-galactopyranosyl-beta-(1,4)-N-acetyl-D-glucosamine 6-sulfate and with variable amounts of fucose, sialic acid and mannose units; keratan sulfate chains are covalently linked by a glycosidic attachment through the trisaccharide galactosyl-galactosyl-xylose to peptidyl-threonine or serine residues.",TAS
GO:0032580,CC,"Golgi cisterna membrane","The lipid bilayer surrounding any of the thin, flattened compartments that form the central portion of the Golgi complex.",IEA
GO:0046872,MF,"metal ion binding","Interacting selectively and non-covalently with any metal ion.",IEA
GO:0070062,CC,"extracellular exosome","A membrane-bounded vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.",IDA