The pathway of metabolism of these amino acids all converge at ProPanel coenzyme A. So we first transform these into proponel coenzyme A. Then that becomes methylmolonial coenzyme A, and that ultimately transform into succinct coenzyme A. So what I've outlined on the board is the pathway by which we essentially transform methionine into succinct coenzyme A. So this will be the focus of this lecture. We're not really going to look at valine or isolucine, but you should know that these amino acids can also be transformed into suclco enzyme A, just like methionine can.