Now, cystionine, by the activity of the enzyme cystionine Gamalayase will essentially be cleaved. So a water molecule will be used to basically remove that cysteine that is formed. So we essentially remove this entire molecule here, including this sulfur atom. And that gives us cysteine. And we also remove this ammonium group. And so ultimately, we generate an alpha ketobutyrate, an alpha ketoacid.