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: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:0030206,BP,"chondroitin sulfate biosynthetic process","The chemical reactions and pathways resulting in the formation of chondroitin sulfate, any member of a group of 10-60 kDa glycosaminoglycans, widely distributed in cartilage and other mammalian connective tissues, the repeat units of which consist of beta-(1,4)-linked D-glucuronyl beta-(1,3)-N-acetyl-D-galactosamine sulfate.",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:0047238,MF,"glucuronosyl-N-acetylgalactosaminyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase activity","Catalysis of the reaction: D-glucuronyl-N-acetyl-1,3-beta-D-galactosaminylproteoglycan + UDP-N-acetylgalactosamine = N-acetyl-D-galactosaminyl-1,4-beta-D-glucuronyl-N-acetyl-1,3-beta-D-galactosaminylproteoglycan + UDP.",TAS
GO:0050510,MF,"N-acetylgalactosaminyl-proteoglycan 3-beta-glucuronosyltransferase activity","Catalysis of the reaction: N-acetyl-beta-D-galactosaminyl-(1,4)-beta-D-glucuronosyl-proteoglycan + UDP-alpha-D-glucuronate = beta-D-glucuronosyl-(1,3)-N-acetyl-beta-D-galactosaminyl-(1,4)-beta-D-glucuronosyl-proteoglycan + UDP.",TAS