And this enzyme uses vitamin B six, PLP. So paradoxyl phosphate. So we take a Serene, we basically remove water and we attach that Serene onto this sulfur here, and we form this intermediate cystionine. 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.