Except now, instead of taking off that phosphoryl group from the second carbon, we take off that phosphoryl group from the third carbon. And so once we take off this phosphoryl group, this one here, we basically regenerate that enzyme histidine, with the modified group complex. And we also form the final product, the two phosphaglycerate. And if we sum up these two reactions, we see that everything will cancel except these two molecules. And so, by summing up these two steps, we get back this net reaction. So we see that in the first step, a phosphoryl group is transferred from that modified histidine on that enzyme onto the three phosphorglycerate.