BIOCHEM 420 Chapter Notes - Chapter 9: Glycan, Cell Adhesion, Oligosaccharide
1 Nov 2020
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Carbohydrates play metabolic roles both as their constituent monomeric units and as polymers. Macromolecular polysaccharides also exist as branched polymers. * carbohydrate formation in photosynthesis and its oxidation in metabolism together constitute the major energy cycle of life. Carbohydrates functions : (cid:8869) energy metabolism (cid:8869) molecular recognition (cid:8869) cellular protection (cid:8869) cell signaling (cid:8869) cell adhesion (cid:8869) biological lubrication (cid:8869) control of protein trafficking (cid:8869) maintenance of biological structure. Monosaccharides : simplest carbohydrates , typically containing 3 - a carbon atoms. Other carbohydrates are formed by linking monosaccharides together (cid:8869) oligosaccharide : only a few monomer units are involved (cid:8869) disaccharide : two monomers (cid:8869) polysaccharides : long polymers of monosaccharides. * carbohydrates are compounds with the empirical formula (ch20), carbohydrates and all of their derivatives while saccharides include: i monosaccharides. Having 5 or g carbons in the chain gives these compounds the potential to form stable ring structures via internal hem , acetal formation.
