Term Name:	glycosaminoglycan-protein linkage region biosynthetic process
Synonyms:	Glycosaminoglycan biosynthesis, linkage tetrasaccharide, glycosaminoglycan-protein linkage region biosynthesis
Definition:	The formation of a tetrasaccharide linker sequence (xylose-galactose-galactose-glucuronate) on specific serine residues of a core protein, on to which dermatan sulfate, chondroitin sulfate, heparan sulfate or heparin glycosaminoglycans may be assembled to synthesise the corresponding proteoglycan.
Ontology:	GO: Biological Process [GO:0120532]    QuickGO    AmiGO