And so Aspartate 102 basically interacts with Histazine 57 to move it and position it into the correct orientation so that the lone pair of electrons on the nitrogen can now interact and pull away this H atom. Now, once the H atom is pulled away, that transforms that alcohol group into an alcoxide group. And because the alkoxide is a much stronger nuclear file, this will now interact with the carbon of the carbonyl and essentially break that peptide bond as we'll see in just a moment. So we see that the theory in 195 in its alcohol form is simply not a strong enough nuclear file. And to transform it into a better nuclear file, a nearby HistoGene 57 pulls away the hydrogen ion to form an alcoxide and to actually position the histidine so that these two residues can interact very well. This Aspartate uses its full positive charge to basically position and move this histidine side chain in the correct orientation.