So that's how we go from Alanine to Pyruvate. Now, Tryptophan basically is transformed into Pyruvate by first converting Tryptophan to Alanine, and then Alanine basically follows this step to form the Pyruvate. Now let's move on to Serene. So serene can be transformed to Pyruvate. And we actually saw before that this was a two step process, and this was catalyzed by Serene Dehydrates. So in the first step, we basically have a water molecule that leaps.