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

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