Biochemistry 4th Edition by Reginald Garrett, Charles Grisham

Exercise 3

Equating the energy of an oxidation-reduction potential difference and the energy for ATP synthesis
(Integrates with Chapters 3 and 20.) Assuming that the concentrations of ATP, ADP, and Pi in chloroplasts are 3 mM, 0.1 mM, and 10 mM, respectively, what is the G for ATP synthesis under these conditions Photosynthetic electron transport establishes the proton-motive force driving photophosphorylation. What redox potential difference is necessary to achieve ATP synthesis under the foregoing conditions, assuming 1.3 ATP equivalents are synthesized for each electron pair transferred.