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Proteins of the Plasma Membrane M2.docx

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Natural Science
NATS 1670
Motti Anafi

Proteins of the Plasma Membrane M2 -November 4, 11 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 o Transport proteins • Cell-cell recognition • Mediate interactions between cells o Different cells types have different set of membrane proteins • Signal transduction o Serve as sensors through which the cell receives signals from its environment • Membrane proteins are usually unable to move back and forth between the inner and outer leaflets of the membrane. However, because they are inserted into a fluid lipid bilayer, both proteins and lipids are able to diffuse laterally through the membrane Glycoproteins • Most tr
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