BIOC12H3 Lecture Notes - Lecture 12: Ethanolamine, Glucosamine, Inositol
23 Sep 2016
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1. lipids are essential components of all living organisms: much greater variation than proteins and carbohydrates, water insoluble that are highly soluble in nonpolar solvents. 4. form of detergent (when it has long hydrophobic tails) 5. concentration of free fatty acid is low in cells: because if high, they could disrupt cell membranes, most fatty acids are components of more complex lipids, e. g. triacylglycerols. 7. joined to other molecules by an ester linkage a. such as glycerol in triglycerides. 2. lauric acid (12c) a. found in oil from plants: myristic acid (14c, oil from nutmeg, palmitic acid (16c) a. from palm oil. 4. composed of a. three fatty acyl residues: with ester linkage to glycerol, very hydrophobic. 3. these are the most abundant lipids in biological membranes: have a glycerol backbone like triglycerides. 2. in mammals a. they are abundant in the central nervous system. 3. the base structure a. is sphingosine a. i. sphingosine is an a. i. 1.
