Describe how the gamma and beta subunits of ATP synthase interact to allow ATP formation.
Answer: The gamma subunit as it rotates extends into the ring and breaks the symmetry of the hexamer by interacting with a beta subunit and changing the beta subunits conformation. The change in conformation causes the beta subunit to either be in a an open, tight or loose position. ATP is generated from ADP and Pi in the tight conformation and released in the loose conformation.