Now, one important fact that you have to know about Succinate dehydrogenase is, unlike the enzymes that we discussed so far, this enzyme, Succinate dehydrogenase, is actually part of the inner mitochondrial matrix. In fact, it's an iron sulfur protein that is also part of the electron transport chain. So what actually happens is when the Sad well, first of all, the Sad is covalently attached onto the Succinate dehydrogenase. But once this reaction takes place, once this oxidation reaction takes place and we reduce the Fad into the Fadh Two, that Fadh two that is formed remains attached, covalently onto the subsidy dehydrogenates. And once we form this, what it does is it donates those two electrons onto a special iron sulfur component of the enzyme, and those two electrons then move on along the other proteins of the electron transport chain. And that generates a proton gradient that allows us to form ATP molecules.