And so the two electrons of the nitrogen of this catalytic histazine residue basically acts as a nucleophile attacking the p atom. And that breaks the sigma bond. And so that detaches this entire four carbon component. And now the carbon basically gains the oxygen, and we form this succinate molecule here. Now, once we undergo step two, we form the succinate and the coenzyme a. So coenzyme a is formed in step one, while the succinate is formed in step two.