Which of the following does not contain uronic acid?: (A) Heparin, (B) Keratin sulfate, (C) Chondroitin sulfate, (D) Dermatan sulfate
Answer is B. Glycosaminoglycans (mucopolysaccharides) are complex carbohydrates containing amino sugars and uronic acidsHeparin -Sulfated glucosamine +L iduronic acidKeratan sulfate - galactose + N-acetylglucosamineChondroitin sulfate - glucuronic acid + N-acetylglucosamineDermatan sulfate - L iduronic acid + N-acetylglucosamineReference: DM Vasudevan biochemistry 8th edition