And so we form the L isomer of malate. And once malate is formed, and this reaction releases negative 3.8 kilojoules per mole of energy. And once we form the malate, now the final enzyme, Malade dehydrogenase, is able to actually reduce the NAD plus into NADH, releasing an H plus ion. In the process, we oxidize the malade into oxyloacetate, and now we regenerate this same molecule that we began with, and we can use this same oxalo acetate to basically carry out that same process all over again. So if we sum up all these steps and by the way, this final step, an oxidation reduction reaction, is a very endergonic reaction. It requires about 29.7 kilojoules per mole of energy.