BIO130H1 Chapter Notes -Electron Paramagnetic Resonance, Lipid Bilayer, Membrane Transport Protein

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24 Apr 2012
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BIO130H1 Full Course Notes
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BIO130H1 Full Course Notes
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Lipid bilayer provides basic structure for all cell membranes seen by electron microscopy structure of lipid molecules assemble spontaneously into bilayers. Micelle cone shaped lipid molecules bilayer cylinder shaped lipid molecules phospholipids self-healing property of bilayer tear in bilayer is energetically unfavourable lipids rearrange spontaneously to eliminate opening. Two-dimensional bilayer lipid molecules are able to diffuse freely within lipid bilayers liposomes bilayers in the form of spherical vesicles vary in size black membranes planar bilayers formed across a partition between two aqueous compartments. Membrane proteins perform most specific tasks in a cell give the cell membrane its functional properties amounts and types of proteins are highly variable. Er transmembrane section is cleaved off and a glycosylphosphatidylinositol (gpi) anchor is added protein is bound to noncytosolic surface solely by anchor transport vesicles deliver the protein to plasma membrane those bound by. Multiple-pass transmembrane protein polypeptide chain crosses multiple.

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