And so the molecule that we use as a coenzyme is NAD. Plus, now the enzyme that catalyze this step is no longer this enzyme. It's a different enzyme known as glutamate dehydrogenase. Now, glutamate dehydrogenase is interesting because it not only uses NAD plus, but it can also use instead of the NAD plus, NADP plus. So we can replace this with NADP plus, but ultimately we use this or the enzyme uses this to basically remove the two electrons and the h to form the NADH. We also remove the h plus and we form a double bond between carbon and the nitrogen, and we form this shift based intermediate shown here.