Biochemistry 2280A Lecture 8: Lipids and Membranes Sept 28
6 Oct 2016
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Topic 6 learning outcomes: lipid classes, roles of lipids, bilayer properties, bilayer fluidity, functions of membrane proteins, transport across membranes, how proteins associate with bilayers, difficulties in studying membrane proteins. Nucleotides nucleic acids (don"t provide a major source of energy in the body) 1 calorie = amount of energy neede tp raise temperature of 1kg of water by 1 degree celsius. Note: 1 dietary calorie = 1000 scientific calories: fat: ~9 calories/gram, carbohydrate: ~4 calories/gram, protein: ~4 calories/gram. Types of lipids: just be able to identify which kind is which. Don"t exist normally typically very bad for you. On nutritional facts: cis: when the carbons are on the same side across from the double bond. Exist more commonly: polyunsaturated: 2+ double bonds, don"t tend to see in fatty acids, we name fatty acids by naming # of carbons:#double bonds starting counting from the carboxyl end. Phospholipids can move around and spin around but rarely ever flip flop.
