BIOC12H3 Lecture Notes - Lecture 11: Cytosol, Gram-Positive Bacteria, Pentose
23 Sep 2016
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Oh group attached to this carbon atom is on the right side of the fischer projection) a. simpler -- the farthest chiral carbon from the cho group has the oh group on the right side of the fischer projection. 2. it is mostly d enantiomers that are synthesized in living cells. 2. identical number of l forms, but not as important in carbohydrates: 4 chiral centers leads to 16 possible stereoisomers a. i. 2. fructose (a ketose) can cyclize to form a cyclic hemiketal a. cyclic form is furanose. 3. cyclic forms possess anomeric carbons (most oxidized carbon) a. the most oxidized carbon is attached to two oxygens. 4. in ring structures a. the anomeric carbon is chiral. 5. for d sugars: alpha configuration has oh down, beta configuration has oh up. 6. for l sugars: alpha configuration has oh up, beta configuration has oh down c. i. e. the reverse is true.
