chondroitin sulphate short fragment. important component of cartilage. used as dietary supplement in treatment of osteoarthritis

acetylgalactosamine acid alternative amino arthritis atoms cartilage chondroitin component dietary disease extracellular fragment gag glucuronic glycosaminoglycan health important matrix medicine model molecular molecule osteoarthritis pdb1c4s peptide polymer polypeptide protein proteoglycan science scientific short structure sulfate sulfated sulphate sulphated supplement treatment used