Now, one other thing I didn't mention is if you go back to organic chemistry and you compare the stability of ketones and enormolecules, we know that ketones exist in equilibrium with enormous, but the ketones are much, much more stable than those enols. So the problem with this molecule is it's actually trapped in its ENL state. So this molecule wants to transform into that more stable ketone, but it can transform because this oxygen is missing an H atom. If we somehow replace the phosphoryl group here with an H atom, then it will be able to transform spontaneously into the more stable ketone form. In fact, that's exactly what will happen in this reaction. So this reaction takes place because this molecule has a very high phosphoryl transfer potential, even higher than ATP.