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. In diagram one, we basically have the inorganic orthophosphate that goes into the active side along with the succinl coenzyme a. So we have the succinct coenzyme a, we have the orthophosphate. And notice the GDP is not found in this location.