So once again, we see that the unstable and high in energy thio esther bond in sucaved to release the coenzyme A and also release free energy. And that free energy is then used to power the endergonic process of attaching of a sporal group onto the GDP to form the GTP. And this is catalyzed by succinct coenzyme asynthetase. Now, before we move on to the next several steps, let's actually discuss what the reaction mechanism is of this process. So what actually takes place in the active side of this enzyme? So let's focus on the following five diagrams to basically answer that question.