BIOC 2580 Study Guide - Final Guide: Trans Fat, Fischer Projection, Dihydroxyacetone Phosphate

• School: University of Guelph
• Department: Biochemistry
• Course: BIOC 2580
• Professor: Evonka Wijekoon

Document Summary

Biological function of lipids: energy storage = triacylglycerol, structural elements of biological membranes = phospholipids. Also, w6 or w9, could be named to specify position of c=c relative to the methyl (w) for pufa (polyunsaturated fatty acid) Trans fatty acids: partial hydrogenation of unsaturated fatty acid, pack more regularly because of trans configuration, decreased melting point. Saturated fats: extended conformations (packed in orderly way, as chain length increases, melting point increases, and solubility decreases. Unsaturated fats: packed less regularly due to kinks, melting point decreases. Derivatives of fatty acids: carboxylic acids + alcohol = ester, carboxylic acid + acid = acid anhydride. Phosphoric acid reaction: phosphoric acid + alcohol = phosphate ester, phosphoric acid + acid = phosphoanhydride (mixed anhydride) Major constitutes of most membranes: glycerophospholipids (phosphoglycerates, biological membrane, c 1:2 are esterified to fatty acids, 3 is phosphodiester linked to highly polar/charged group (x) (head, form lipid bilayers, phosphatidylcholine (pc, x = choline, phosphatidylethanolamine (pe)