Phospholipids and Steroids

Phospholipids and Steroids - Lipids Phospholipids Steroids...

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1 Lipids Phospholipids Steroids and Cholesterol Plasma (Cell)Membranes
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2 Phosphoglycerides Most abundant lipids in cell membranes Control cell permeability FATTY ACID FATTY ACID glycerol PO 4 Amino alcohol
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3 Lecithin Abundant in brain and nerve tissues Found in egg yolk, what germ, yeast C O (CH 2 ) 14 CH 3 + choline, an amino alcohol O C O (CH 2 ) 14 CH 3 CH O CH 2 O P O O - O CH 2 CH 2 N(CH 3 ) 3 CH 2
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4 Sphingolipids Esters of an 18-carbon alcohol sphingosine FATTY ACID sphingosine PO 4 Amino alcohol
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5 Sphingomyelin Found in the myelin sheath CH 3 (CH 2 ) 12 CH=CH –CH–OH O sphingosine fatty acid CH–NH –C –(CH 2 ) 14 CH 3 O + CH 2 –O –P – O –CH 2 CH 2 –N–(CH 3 ) 3
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6 Steroids Steroid nucleus 3 cyclohexane rings 1 cyclopentane ring steroid nucleus
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7 Cholesterol Most abundant steroid in the body Add methyl CH 3 - groups, alkyl chain, and -OH to steroid nucleus CH 3 HO CH 3 CH 3 CH 3 CH 3
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8 Cholesterol in the Body Cellular membranes Myelin sheath, brain, and nerve tissue Bile salts Hormones Vitamin D
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Phospholipids and Steroids - Lipids Phospholipids Steroids...

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