Molecular Biology Of The Cell 6th Edition by Bruce Alberts, Alexander Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter

Exercise 10

The three respiratory enzyme complexes in the mitochondrial inner membrane tend to associate with each other in ways that facilitate the correct transfer of electrons between appropriate complexes.
A. Why does the actin filament revolve in steps with pauses in between? What does this rotation correspond to in terms of the structure of the complex?
B. In its normal mode of operation inside the cell, how many ATP molecules do you suppose would be syn- thesized for each complete rotation of the subunit? Explain your answer.