In fact, the GDP is found nearby, but not in the same location. And we'll see what happens in the final two steps that allows us to actually bring that orthophosphate to that GDP. So in the first step, what happens is the inorganic orthophosphate actually acts as a nucleophile. It attacks the carbon of this carbonyl, breaking this unstable bond, and that releases that coenzyme a, and it forms an intermediate molecule known as succinal phosphate. So in step one, we displace the coenzyme a, we release the coenzyme a from the active side, and so we produce this product in step one. Once we form the succinct phosphate within the active side of this enzyme, we have a specific catalytic histazine residue that basically catalyzes the next step.