MCB 150 Lecture Notes - Lecture 7: Phosphatidylserine, Flippase, Ethanolamine

• School: University of Illinois
• Department: Molecular and Cell Biology
• Course: MCB 150
• Professor: B Mehrtens

Document Summary

Lipids are defined by a physical property insolubility in water vary widely in structure. Carboxyl group: acidic component carboxylic acid group. 16:0 : # of carbon-carbon double bond in the tail the kink (does not count carboxylic acid group) cause. 3 fatty acids + glycerol (3 carbon molecule) = triglycerides. 3 ester linkages (glycerol + 3 fatty acids), expel 3 water molecules. In all saturated fatty acids tails stack together nicely interact tightly with each other more stable. More likely to be solid fats. Glycerol (3 carbon molecule) + 2 fatty acids + phosphate group phospholipid. Polar head groups vary widely in structure. 3-carbon backbone + 2 fatty acid tails r1 and r2 + phosphate group attached to the third carbon. Phosphatidic acid, they all have some other chemical group attached on the other side of that phosphate group. Phosphatidic acid is simply a phosphate group; it"s still a membrane phospholipid.