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Unformatted text preview: ionizes Why is ATP such an energetic molecule? Why is equilibrium so far to right? V&V14-6 phosphoanhydride bonds are kinetically stable: Role of AMP and pyrophosphate: in some rxns, 2 terminal phosphate groups enzymatically removed as pyrophosphate (PP i ), leaving AMP: ATP coupling coefficient? PP i + H 2 O 2P i ∆ G°' = -19.2 kJ/mol ATP + H 2 O AMP + PP i ∆ G°' = -45.6 kJ/mol Δ G = Δ G o + RT ln [Products] [Reactants] Standard free energy change vs. reversibility in cell: Q = mass-action ratio A B...
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- Spring '09
- Adenosine triphosphate, phosphate bonds, phosphate ion Hydration