And even though the gamma epsilon central stalk actually rotates through the central cavity of the alpha three beta three Heximer because this A subunit does not rotate and the A subunit is connected to this delta structure through these 2D subunits. This entire alpha three beta three hexamer doesn't rotate as well. So this alpha three beta three heximur structure remains stationary because it is connected via this structure to this stationary A subunit of the f not region. So the movement of the protons through this ATP synthase rotates the Ce ring and that in turn rotates the gamma epsilon stock but everything else actually remains stationary. So now we basically answered question one. So now we know how the movement of the protons across ATP synthase actually allows it to generate the ATP molecules.