Lecture 2 - 1 CELL CHEMISTRY PART A: BASIC ORGANIC AND...

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CELL CHEMISTRY CELL CHEMISTRY 1 PART A: BASIC ORGANIC AND BIOCHEMISTRY PAGES 2-25 PART B: LOW MOLECULAR WEIGHT PRECURSORS OF MACROMOLECULES PAGES 26-37
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MONOSACCHARIDES Aldehydes (Aldoses) Ketones (Ketoses) Glyceraldehyde D-Glyceraldehyde L-Glyceraldehyde C 3 H 6 O 3 Non-identical mirror images [Enantiomers] Orientation of -OH on next to last carbon indicates D or L Center of asymmetry is Carbon 2 Both have a carbonyl group 18
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D + L FORMS OF GLUCOSE C 6 H 12 O 6 carbons D-Glucose L-Glucose Stereoisomers-Enantiomers Non identical mirror images Note: orientation of -OH on next to last carbon indicates D or L 19
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STEREOISOMERS Same chemical formulas Same functional groups Have different geometry A. ENANTIOMERS B. DIASTEREOISOMERS [also called epimers] 20
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ENANTIOMERS Same chemical formulas Same functional groups Have different geometry The mirror images are not super-imposable e.g. D-Glyceraldehyde L-Glyceraldehyde D - DEXTROROTATORY (rotates polarized light to right) L - LEVOROTATORY (rotates polarized light to left) 21
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This note was uploaded on 09/17/2009 for the course BIO 326R taught by Professor Whiteley during the Spring '08 term at University of Texas at Austin.

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Lecture 2 - 1 CELL CHEMISTRY PART A: BASIC ORGANIC AND...

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