Lecture16 - BCH 227 FALL 2010 LECTURE 16: INTRO TO...

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1 Introduction to Metabolism BIOCHEM 227 FALL 2010 Lecture 16 Wednesday, October 6, 2010 TODAY • Continued: Lipids • General principles of metabolism •R edox BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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2 Lipids • Biological molecules that are insoluble in water – long chain hydrocarbons – cyclic structures like the sterols Energy Storage Lipids • Fatty acids very low oxidation state → much stored energy – long chain hydrocarbons with carboxylic acid – sometimes with an alkene (unsaturated) • Triglycerides – Three fatty acids + glycerol BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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3 Fatty Acids Fatty Acid Names • Common name e.g. linoleic acid • Systematic name e.g. cis-,cis- 9,12-octadecatrienoic acid • Abbreviation e.g. 18:2( Δ 9,12 ) BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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4 cis- / trans -Fatty±Acids • Plant unsaturated fatty acids are cis- • Dairy and animal unsaturated fatty acids can be trans- • Also hydrogenation… Unsaturated • Double bonds introduce kinks • Less dense packing – Therefore liquids at room temperature BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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5 Triglycerides • Esters of fatty acids with glycerol BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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6 Fat Composition Metabolism BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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7 BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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8 Questions for Metabolism • How do living organisms obtain energy? • How do living organisms generate their own structure? BCH 227 FALL 2010 LECTURE 16: INTRO TO METABOLISM 6 OCT 2010
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9 Energy • Why is it needed?
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This note was uploaded on 12/19/2010 for the course BIOCHEM 227 taught by Professor Coggins during the Fall '10 term at Duke.

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Lecture16 - BCH 227 FALL 2010 LECTURE 16: INTRO TO...

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