BIOL-4610 Study Guide - Midterm Guide: Cdc42, Ahold, C More Entertainment
19 Sep 2018
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Allow communication, adherence and contact between cells. Sphingomyelin - myelin sheath of nerve cell. Glycosphingolipids- prominent in brain and nerve cells. Cerebrosides - neutral glycolipids with uncharged sugar. Gangliosides- oligosaccharide + one or more negative charge sialic acid residue. Palmitate (16 c) and stearate (18 c) Oleate and linoleate - both 18 c. Two properties of lipid makeup determining fluidity: Length of chain- longer chain = less fluidity (higher tm ) Saturated v unsaturated - saturated = less fluidity (higher tm ) High temp = keep membrane from being fluid. Low temp = keep fa from fitting snugly. Multipass- weave in and out of membrane. Peripheral protein - weak hold in plasma membrane. Lipid anchored protein- covalently attached to surface of cell. Fatty acid anchor- protein + saturated fa. Isoprenyl anchor- protein + 5 c isoprenyl group. Gpi anchor- 2 fatty acid chains + a sugar molecule. Gas and small uncharged water soluble molecules.
