F08-BCH361-L5

F08-BCH361-L5 - Function and classes of proteins Structural...

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Function and classes of proteins Structural proteins Building block of ceratin, collagen, fibroin Transport proteins transport of molecules in solution or across the membrane Receptors signal transduction: cell communication Redoxproteins perform reduction/oxidation reactions Enzymes catalyze biochemical reactions
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Proteins, which are important for the structure of cells
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A network of actin and spectin located on the inside of the plasma membrane provides the red blood cells with stability and flexibility
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Actin- subunits thin Actin- filaments Fodrin Filamin
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8 nm 22 nm α β
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1 2 3 4 ATP is hydrolyzed myosin binds to actin-filament A conformational change in myosin moves the actin- filament ATP binds and head de- attaches
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Function of Proteins
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Receptors
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Receptor intracellular signal Change of the membrane potential Acetylcholinreceptor
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Acetylcholine
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The electrical organ of this ray contains billions of molecules of the acetylcholine-receptor
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Overview of the structure of the acetylcholine-receptor
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This note was uploaded on 09/30/2011 for the course BCH 361 taught by Professor Fromme during the Fall '08 term at ASU.

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F08-BCH361-L5 - Function and classes of proteins Structural...

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