BP

GO:0006486

protein glycosylation

A protein modification process that results in the addition of a carbohydrate or carbohydrate derivative unit to a protein amino acid, e.g. the addition of glycan chains to proteins.

IEA

BP

GO:0018146

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

CC

GO:0000139

Golgi membrane

The lipid bilayer surrounding any of the compartments of the Golgi apparatus.

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

CC

GO:0032580

Golgi cisterna membrane

The lipid bilayer surrounding any of the thin, flattened compartments that form the central portion of the Golgi complex.

IEA

MF

GO:0003831

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

MF

GO:0008378

galactosyltransferase activity

Catalysis of the transfer of a galactosyl group to an acceptor molecule, typically another carbohydrate or a lipid.

TAS

MF

GO:0046872

metal ion binding

Interacting selectively and non-covalently with any metal ion.

IEA