Serum mucin

Serum mucin accounts for 1% to 2% of the total serum protein. It is a heat-resistant complex protein composed of mucopolysaccharides and protein molecules in the body. It is a glycoprotein in the body and swims with globulin during electrophoresis. The mucopolysaccharide is often composed of glucosamine, galactose, mannose, fucose, and sialic acid. The composition of mucin is complex, and the classification and nomenclature have not been consistent. Meyer classifies the complex of sugar and protein by the content of aminohexose. Mucosin with an aminohexose content of more than 4% is called glycoprotein.