NUTR 3210 Lecture Notes - Lecture 6: Anomer, Fischer Projection, Stereocenter
29 Jan 2017
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Document Summary
Considered a reducing sugar if the anomeric carbon is free this is how we. January 26th 2017 build the monosaccharide into a bigger structure. Two monosaccharides joined by an acetyl bond (glyosidic bond) Homo & hetero-polysaccharides (determined by what monosaccharides are attached) All cho have a hydrogen to oxygen ratio of 2:1. Triose metabolites of glucose during glycolysis (2 3-carbon structures are formed) Pentose components of dna and rna. They are have a similar positioning of the carbonyl group! Anomeric carbon = location of the carbonyl group. Same molecular formula and sequence, but differ in 3d space due to chiral carbon atoms. Chiral carbon counting begins with carbonyl carbon. Exists in two forms: d vs. l. Determined by the oh group on the highest chiral carbon. The number of stereoisomers for a molecule = 2n (where n = # of chiral carbons) D-monosaccharides are nutritionally more important because digestive enzymes are stereospecific for d sugars.
