<unk>  (; abbreviated<unk> ; conjugate base<unk> uronate), also called<unk> uronan, is an anionic, nonsulfated glycosaminoglycan distributed widely throughout connective, epithelial, and neural tissues. It is unique among glycosaminoglycans as it is non-sulfated, forms in the plasma membrane instead of the Golgi apparatus, and can be very large: human synovial<unk>  averages about 7 million Da per molecule, or about 20,000 disaccharide monomers, while other sources mention 3–4 million Da. As one of the chief components of the extracellular matrix, it contributes significantly to cell proliferation and migration, and is involved in the progression of many malignant tumors. The average 70 kg (150 lb) person<unk> s roughly 15 grams of<unk> uronan in the body, one-third of which is turned over (i.e., degraded and synthesized) per day.<unk>  is also a component of the group A streptococcal extracellular capsule, and is believed to play a role in virulence.
Hyaluronic acid
Polysulfated glycosaminoglycan
Cerebroside
Glucuronic acid
Lecithin
Hippulin
Pentosan polysulfate
Chaperone 