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Unformatted text preview: aldehyde = aldose Triose Tetrose 2 (n-3) stereoisomers of ketoses c.f. 2 (n-2) Pentose Hexose stereoisomers of aldoses 11/13/2009 2 Monosaccharides can form ring structures Note that unlike condensation reactions there is NO loss of a water molecule in these cyclization reactions. -below plane -above plane Glycosidic bonds are between two sugars They can either be in the or configuration and can be linked through the 1-2, 1-4 or 1-6 linkage Note loss of water from condensation reaction above. 11/13/2009 3 Sugar Polymers The Polysacchrides Energy Storage Starch -amylose and amypectin Structura Structural Cellulose and Chitin Glycosaminoglycans Proteoglycans -amylose (starch) / Cellulose (poly -glucose) Glycosaminoglycans & Proteoglycans Bacteria Cell Walls Peptidoglycan Next Lecture Tuesday 11/03/09 Glycolysis Glycolysis I...
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- Spring '08