NATS 1670 Lecture Notes - Lipid Bilayer, Signal Transduction, Cell Membrane
25 Mar 2014
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Document Summary
The structure of a prokaryotic cytoplasmic membrane: a phospholipid bilayer. Transmembrane proteins: proteins embedded within the phospholipid bilayer carry out the specific functions of the plasma membrane, control the passage of most biological molecules across the plasma membrane. Transport proteins: cell-cell recognition: t-cells have to touch virus cells (hydrophobic cells like to interact with hydrophobic cells) Mediate interactions between cells: different cell types have different set of membrane proteins: this is one of the ways we can identify our cells. The membranes are similar in most of the cases: signal transduction. Serve as sensors through which the cell receives signals from its environment receptors. Vesicle: a pocket made of membrane that is separated from the cytoplasm of a cell, a carrier of molecules in and out of the cell without crossing the membrane. It likes to interact with another hydrophilic membrane. Penetration of enveloped viruses by endocytosis: most viruses are enveloped in pockets membranes, herpes/influenza hiv.
