Now, Aminotransferase, as we'll talk about in more detail in the next lecture, uses an important coenzyme, a vitamin B six derivative known as peridoxylphostate. So a periodoxyl phosphate needs to be present for this enzyme to actually be effective. If we have deficiency in this coenzyme here, this enzyme will not function correctly. So this is a general process that takes place. We begin with some target amino acid that we have too much of. So we want to break this down.