CH369.Lecture8 - Biological membranes Distribution of Na+...

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Biological membranes
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Distribution of Na + and K + ions in an animal cell [Na + ] = 12 mM [Na + ] = 150 mM
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A lipid bilayer membrane hydrophobic tails hydrophobic tails Hydrophilic head Hydrophilic head The lipid bilayer forms spontaneously due to the influence of the hydrophobic effect.
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Fatty acids in a lipid bilayer
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Bilayer-forming abilities of some lipids
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Figure 8.04a Sphingomyelin structure.
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Figure 8.04b Sphingomyelin structure.
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Figure 8.05 Dimensions of a lipid bilayer.
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Types of membrane proteins
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A membrane-spanning α helix.
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Figure 8.07b A membrane-spanning α helix.
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Figure 8.08 Bacteriorhodopsin.
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Figure 8.09 A membrane-spanning ß barrel.
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Figure 8.10a Attachment of lipids in some lipid-linked proteins.
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Figure 8.10b Attachment of lipids in some lipid-linked proteins.
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Figure 8.10c Attachment of lipids in some lipid-linked proteins.
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Figure 8.10d Attachment of lipids in some lipid-linked proteins.
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The fluid mosaic model of membrane structure
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Figure 8.12 Limitations on the mobility of membrane proteins.
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Electron micrograph of the surface of a red blood cell.
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- The carbohydrates on the surface of red blood cells form 15 different blood group systems. - ABO blood group system
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CH369.Lecture8 - Biological membranes Distribution of Na+...

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