And when this bond breaks, the two electrons that exist in that Sigma bond now basically move on to this H atom and take away that H atom. And again, the reason we want to take away that H atom is because we want to remove this positive charge that exists on the ring of this Histidine 57 side chain. And so, in the next step, we basically reform that alcohol group found on the serine, we remove that H atom that was on the nitrogen. So we reform the Histidine 57 side chain and we also form this final product, the carboxylic acid. And so now this is one of the products, this is the other product. And together we see that the end result is the cleavage of that peptide bond.