So in the next step, this pensaclyne would basically move into the active side and the enzyme would catalyze the formation of that cross linkage between this nitrogen here and this carbon here. So this is how that catalyzation process actually takes place normally in the absence of penicillin. Now, what happens when we add penicillin? Well, as we discussed in our discussion on Irreversible inhibitors, we said that penicillin is an example of a suicide inhibitor. And what that basically means is what penicillin does is it moves into the active side of this enzyme, the glycopeptide transpeptidase, and it tricks the active side, the enzyme, it tricks it into thinking that the penicillin is actually a substrate. And so this enzyme is going to treat the penicillin as if it was a substrate.