Lecture_8 - ipids and Biomembranes Micelles and lipid...

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Unformatted text preview: ipids and Biomembranes Micelles and lipid bilayers General structure and function of major types of lipids Biomembranes Integral membrane proteins Transport of polar substances via membrane Learning Objectives hat are Lipids? Lipids are biomolecules that are soluble in organic solvents (e.g., methanol). Class of lipids covers fats, oils, nonprotein membrane components and certain vitamins and hormones. By their chemical structure, lipids are classified as fatty acids, triacylglycerols, glycerophospholipids, sphingolipids, and steroids. Unlike proteins, nucleic acids, and carbohydrates, lipids are not polymers. Lipid molecules have a great structural variety. Major biological functions of lipids: - essential components of biomembranes- energy reserves- signaling molecules atty Acids Fatty acids are carboxylic acids with long-chain hydrocarbon groups. Stearic acid has completely saturated side chain. Most fatty acids have even number of carbon atoms. Predominant fatty acids in higher plants and animals have 16 or 18 carbon atoms....
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This note was uploaded on 01/27/2011 for the course BIOCH 2EE3 taught by Professor Zhorovb during the Spring '10 term at McMaster University.

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Lecture_8 - ipids and Biomembranes Micelles and lipid...

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