Chapter 15 Lipids 15.5 Glycerophospholipids Fatty acid Glycerol Fatty acid PO4 Amino alcohol Glycerophospholipids Glycerophospholipids are • the most abundant lipids in cell membranes. • composed of glycerol, two fatty acids, phosphate, and.
Download ReportTranscript Chapter 15 Lipids 15.5 Glycerophospholipids Fatty acid Glycerol Fatty acid PO4 Amino alcohol Glycerophospholipids Glycerophospholipids are • the most abundant lipids in cell membranes. • composed of glycerol, two fatty acids, phosphate, and.
Chapter 15 Lipids 15.5 Glycerophospholipids Fatty acid Glycerol Fatty acid PO4 Amino alcohol 1 Glycerophospholipids Glycerophospholipids are • the most abundant lipids in cell membranes. • composed of glycerol, two fatty acids, phosphate, and an amino alcohol. Fatty acid Glycerol Fatty acid PO4 Amino alcohol 2 Polarity of Glycerophospholipids A glycerophospholipid has • two nonpolar fatty acid chains. • A phosphate group and a polar amino alcohol. CH3 │+ + HO−CH2−CH2−N−CH3 HO−CH2−CH2−NH3 │ choline CH3 ethanolamine + NH3 │ HO−CH2−CH−COO− Amino alcohols serine 3 Structure and Polarity of A Glycerophospholipid 4 Lecithin and Cephalin Lecithin and cephalin are glycerophospholipids • abundant in brain and nerve tissues. • found in egg yolk, wheat germ, and yeast. 5 Learning Check Identify each as A. fatty acid C. amino alcohol B. triacylglycerol D. glycerophospholipid 1. glyceryl trioleate 2. cephalin 3. choline 4. palmitic acid 6 Solution Identify each as a: A. fatty acid C. amino alcohol 1. glyceryl trioleate 2. cephalin 3. choline 4. palmitic acid B. triacylglycerol D. glycerophospholipid B. triacylglycerol D. Glycerophospholipid C. amino alcohol A. fatty acid 7