Physiology 3140A Lecture Notes - Lecture 9: Lipid Raft, Olive Oil, Phospholipid
10 May 2020
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If the r group is neutral, the phosphate is (-), thus the overall charge is (-) If the r group is positive, the phosphate is (+) and the overall charge is neutral. You need unsaturated phospholipids on the outside to add curvature to the cell. The length can vary from 12-22 c, but usually it"s 16-18. The degree of saturation depends on the number of double bonds. No double bonds = saturated to 3 double bonds (saturated) How to count c position: start at the tail, so you"re counting up. The greater the ration of unsaturated : saturated fatty acid, the more fluid. Cholesterol: too high [] aggregates into lipid rafts, which are rigid areas, too little increases fluidity, proteins. Glycolipids on outer membrane: glycosylated in the er, moves to the ga, and therefore ends up in the outside of the cell. More pc in outer membrane of pm. Ps in the inner membrane of pm.
