Biomolecules Lecture_8_Lipids

Biomolecules Lecture_8_Lipids - Biomolecules and Metabolism...

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Lecture 8 - Lipids Biomolecules and Metabolism
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Classifications 1. Fatty Acids 2. Acylglycerides 3. Phospholipids 4. Sphingolipids 5. Steroids 6. Lipoproteins
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Steroid Ring Structure 1. Steroids are lipids with complex ring structures 2. Composed of four interconnected rings, with variations in the functional groups and location of double bonds
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Cholesterol 1. Important component of cell membranes 2. Precursor for bile acids, vitamin D and steroid hormones (cortisol, progesterone, estrogen and testosterone) 3. Produced only by animals (thus, it is only found in animal-derived foods including dairy products). 4. 85% naturally produced in the body 5. 15% derived from the diet
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Cholesterol
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Cholesterol Important component of cell membranes
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Cholesterol Ester Hydrocarbon tail Site of attachment of fatty acid in cholesteryl ester
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Cholesterol Ester Hydrocarbon tail Esterified fatty acid
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Cholesterol 1. Critical that cells of the major tissues of the body have a cholesterol supply 2. Body has developed a complex series of
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Biomolecules Lecture_8_Lipids - Biomolecules and Metabolism...

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