Now the last thing that I'd like to discuss is vitamin B twelve deficiency. What happens if an individual is vitamin B twelve deficient? For example, because of malnutrition? What exactly will happen? Well, in an individual that is vitamin B twelve deficient, this reaction will not actually take place and will have a build up of this intermediate molecule. So because we have no vitamin B twelve in vitamin B twelve deficiency, this mutase will not be able to transform the lmethyl malnol coenzyme a into the suclaim A.