And so in this particular conformation, this particular beta subunit exists in the 10th state. This exists in the lose state and this exists in the open state. Now, only in the 10th state are the ATP and orthophosphate molecules brought close enough for them to actually react and form the ATP. And so we see that there is an equilibrium that exists between the reactants and the products. But once this C structure actually rotates, will this structure actually rotate. So this, remember, is that gamma structure that creates that central stalk that basically moves through the central cavity of that Hexima ring.