Glycoprotein - Wikipedia Glycoproteins are proteins which contain oligosaccharide (sugar) chains covalently attached to amino acid side-chains The carbohydrate is attached to the protein in a cotranslational or posttranslational modification This process is known as glycosylation Secreted extracellular proteins are often glycosylated
Glycoprotein Structure: Components, Chains, and Function Glycoproteins are composite molecules built from a protein and a carbohydrate The protein part is a polypeptide, which is a chain of amino acids linked together The specific sequence of these amino acids is dictated by an organism’s genetic code and establishes the fundamental framework of the glycoprotein