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Chapter 9 (part 1) Lipids and Membranes. Lipid Subclasses.

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Presentation on theme: "Chapter 9 (part 1) Lipids and Membranes. Lipid Subclasses."— Presentation transcript:

1 Chapter 9 (part 1) Lipids and Membranes

2 Lipid Subclasses

3 Fatty acids

4 Fatty acid nomenclature

5 Common saturated fatty acids common nameIUPAC namemelting point (C o ) 12:0lauratedodeconoate44 14:0myristatetetradeconoate52 16:0palmitatehexadeconoate63 18:0stearateoctadeconoate70 20:0arachidateeicosanoate75 22:0behenatedocosanoate81 24:0lignoceratetetracosanate84

6 Common unsaturated fatty acids common nameIUPAC name melting point (C o ) 16:0palmitatehexadeconoate63 16:1  9 palmitoleate cis-  9 -hexadeconoate -0.5 18:0stearateoctadeconoate70 18:1  9 oleate cis-  9 - octadeconoate 13 18:2  9,12 linoleate cis-  9,12 - octadeconoate -9 18:3  9,12,15 linolenate cis-  9,12,15 - octadeconoate -17 20:0arachidateeicosanoate75 20:4  5,8,11,14 arachindonate cis-  5,8,11,14- eicosatetraenoate -49

7 Physical Properties of Fatty acids 18:0 18:1 18:3 70 o 13 o -17 o

8 Unusual fatty acids can function analogously to unsaturated fatty acids

9 Phospholipids

10

11 Common membrane phospholipids

12 Enzymes used to Dissect Phospholipid Structure


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