BI+107+Chapter+7

BI+107+Chapter+7 - PlasmaMembrane Structure&Function...

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Plasma Membrane Structure & Function
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Fluid Mosaic Model Phospholipid bilayer Lipids/cholesterol Movement Sidedness of the membrane Proteins
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Fig. 7-3 Phospholipid bilayer Hydrophobic regions of protein Hydrophilic regions of protein
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Fig. 7-5b (b) Membrane fluidity Fluid Unsaturated hydrocarbon tails with kinks Viscous Saturated hydro- carbon tails
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Fig. 7-5c Cholesterol (c) Cholesterol within the animal cell membrane
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Fig. 7-5a (a) Movement of phospholipids Lateral movement ( 10 7 times per second) Flip-flop ( once per month)
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Fig. 7-6 RESULTS Membrane proteins Mouse cell Human cell Hybrid cell Mixed proteins after 1 hour
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Fig. 7-7 Fibers of extracellular matrix (ECM) Glyco- protein Microfilaments of cytoskeleton Cholesterol Peripheral proteins Integral protein CYTOPLASMIC SIDE OF MEMBRANE Glycolipid EXTRACELLULAR SIDE OF MEMBRANE Carbohydrate
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Fig. 7-8 N-terminus C-terminus α Helix CYTOPLASMIC SIDE EXTRACELLULAR SIDE
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Functions of Membrane  Proteins Transport Active Passive Enzymatic activity Signal transduction Cell adhesion Cell – cell recognition Support proteins
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Fig. 7-9 (a) Transport ATP (b) Enzymatic activity
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This note was uploaded on 09/20/2011 for the course BIO 107 taught by Professor Berney during the Fall '10 term at Montgomery CC.

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BI+107+Chapter+7 - PlasmaMembrane Structure&Function...

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