CHEM 108 Lecture Notes - Lecture 16: Cyclopentane, Sphingomyelin, Myelin
9 Apr 2017
School
Department
Course
Professor
Document Summary
Hydrolysis (opposite of esterification) breaking with water. Saponification fat or oil + strong base glycerol + salts of fatty acids (soaps) 17. 5 phospholipids: phospholipids lipids that are fatty acid phosphoesters of glycerol or sphingosine and contain amino alcohols. Amino alcohols: three important amino alcohols are found in glycerophospholipids, in the body, ph7. 4, these are ionized. , choline found in sphingolipids, alcohol oh group forms a phosphoester. Glycerophospholipids: glycerophospholipids composed of glycerol, 2 fatty acids, phosphate, and an amino alcohol, lecithins (phosphatidylcholine) has choline, sometimes serine, cephalin (phosphatidyl ethanolamine) has ethanolamine, major component of cell membranes. Amphipathic nature of glycerophospholipids: amphipathic having both a polar end and a nonpolar end on the same molecule, basisforcell membrane formation. Sphingolipids- composed of sphingosine, 1 fatty acid, orthophosphate, and an amino alcohol fatty acid attached to amine group (amide bond) of sphingosine. Sphingomyelins are found in most animal cell membranes- especially the myelin sheath. 17. 6 steroids: cholesterol, bile salts, and steroid hormones.
