And so we use an ATP, we essentially phosphorylate this carbon and we form the carboxy phosphate. So now this molecule, unlike this one, has an additional negative charge and that makes it more reactive. Now, we also generate an ADP molecule that is not shown. Now, once we form the carboxy phosphate, what happens is the following. So this same enzyme, carbon oil phosphate synthetase, takes a glutamine molecule and hydrolyze the glutamine. And once we hydrolyze glutamine, we form two things.