NUTR 3210 Lecture Notes - Lecture 14: Acetyl-Coa, Phospholipid, 3 Ft Gauge Rail Modelling
1 Nov 2016
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Document Summary
Soluble in organic solvents, insoluble in non-polar solvents. Building blocks of biological membranes can disrupt membrane function (lipid rafts) Dietary essential fatty acids (alpha linoleic omega 3 & linoleic acids omega 6) Chains of 2-24 carbons, long, linear h-c chain. Have a hydrophilic (carboxyl) end, and a hydrophobic (methyl) end. 2 categories: saturated: no double bonds (saturated with hydrogen). Linear: unsaturated: has double bonds, introducing kinks in the chain. Polyunsaturated (pufa): 2 or more double bonds. Delta system: numbering starts from carboxyl end, location of the double bond changes as fatty acids chains are elongated because carbons are added at the carboxyl end, 18:2 9,12. ** there must be 3 carbons between double bonds. Sauturated (sfa: bad, palmitic acid (16:0), linear, solid at room temperature, straight chains can stack up on each other. Pufa: good, 2 or more double bonds, lots of kinks, linoleic or arachidonic acids, liquid at room temp due to increased fluidity of membranes.
