But for Serene and three anine, this is a single step process and it's catalyzed by single enzyme, a dehydrates. So we call it a dehydrates because there is a dehydration reaction that precedes a deamination reaction, as we'll see in just a moment. So for serine, we have serine dehydrates that basically deaminates the serine into Pyruvate and that forms Ammonium. For three enine, we form alpha, ketobutyrate, and the ammonium, the Ammonium goes into the urea cycle. These can be used for energy purposes. Now, to see exactly what happens, let's focus on this reaction here.