chapter 8 - ATP Adenine Metabolism. Adenosine triphosphate...

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1 Metabolism… and Cell Respiration Adenosine triphosphate (ATP) ATP Ribose Adenine Energy P P P i Adenosine diphosphate (ADP) Inorganic phosphate H 2 O + + ADP hydrolysis ATP P i ADP Energy for cellular work (ENDERGONIC, energy- consuming processes) Energy from catabolism (EXERGONIC, energy- yielding processes) + ATP cycle P i P P ATP ADP Motor protein Mechanical work: ATP phosphorylates motor proteins Protein moved Membrane protein + ATP drives cellular work P NH 2 Glu P i P i Glu NH 3 P P Solute Transport work: ATP phosphorylates transport proteins Solute transported Chemical work: ATP phosphorylates key reactants Reactants: Glutamic acid and ammonia Product (glutamine) made + + P P Activation Energy Æ needed for a reaction Atoms, ions & molecules Æ move & collide Activation energy Æ collision energy needed to break bonds & begin a reaction particle concentration & temperature Æ increase collision Catalysts or enzymes lower activation needed for a reaction Course of reaction without enzyme E A without enzyme rgy E A with enzyme is lower Reactants Δ G is unaffected by enzyme
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This note was uploaded on 04/16/2008 for the course BIO 131 taught by Professor Paz y mino during the Fall '08 term at UMass Dartmouth.

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chapter 8 - ATP Adenine Metabolism. Adenosine triphosphate...

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