NCIt definition : A protein that has one or more glycosaminoglycans covalently attached.;
Alternative definition : NCI-GLOSS: A molecule that contains both protein and glycosaminoglycans, which are
a type of polysaccharide. Proteoglycans are found in cartilage and other connective
tissues.;
NCIt note : A proteoglycan is usually heavily glycosylated with many glycosaminoglycan chains.;