ANAT 212 Lecture Notes - Lecture 6: Thioester, Coenzyme A, Citric Acid Cycle
30 Mar 2020
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Previous lecture: we saw the lipids which makes the biological membranes. Today"s lecture proteins which are inserted into the membranes. Recap: phospholipid major types of lipid in the cell charged head group, phosphate, glycerol and 2 fatty acid tails. Size: much larger than a single amino acid (in ps, serine is the charged head group). Hydrophobicity: the fatty acid tails can be saturated with hydrogens (all single bonds) or can have some unsaturation (cis double bonds). Charged head group with a phosphate and hydrophobic tails (with 14 to 24 carbons) Glycolipids (only found on plasma membrane): they are not exactly phospholipids, but they have a similar structure in the hydrophobic regions. The exterior part which is polar are a large variety of different oligosaccharide (different sugar moieties), some of them are acidic. The hydrophobic end is similar to a phospholipid (2 fatty acid tails) Cholesterol: steroid ring (4 rings flat structure), it embeds deeply into the membrane.
