Now, the conversion of cysteine into Pyruvate is actually pretty complicated because there are several different pathways by which cysteine can be transformed into Pyruvate. So we're not going to look at the details of those steps or those pathways. But I will mention that in the conversion of cysteine to Pyruvate, we have to somehow remove this sulfur atom. And so, depending on the pathway that is followed, that sulfur atom is released as either thiocyanate, hydrogen sulfide or sulfur trioxide, and we ultimately form the Pyruvate. Now let's move on to the conversion of Alanine into Pyruvate. Now, we actually discussed this before, so we saw that Alanine could be transformed to Pyruvate in a single step, in a single transamination step.