Now, once we generate this intermediate, the next step is to actually move this acetyl group from this sulf Hydrol to this sulf Hydrol shown here. And so in step number two, all we're doing is we're transferring this acetyl group onto this cysteine which acts as a temporary holding group. So it holds this molecule in place because ultimately what we're going to do is we're going to combine them and elongate that fatty acid chain so we see that in the next step, the Cetal group is transferred onto the 16 residue as shown in this particular diagram. Now, once we form that, what happens next? Well, in the next step, this is where the melanoc coenzyme A comes into play. So the melanoco enzyme A that we form in this step now is a reactant in step number three.