And this is exactly what allows us to actually separate or purify mixtures of isozymes. Now, not only that, but Icimes also generally have different enzyme kinetics. So they differ in the Km value, the mechanism constant in a turnover number Kcat, and they also differ in things like the V max, the maximum velocity at which the enzyme operates. And isozymes are also typically regulated by different types of regulatory molecules, different types of allosteric effectors. So, inside our body we have many different types of cells. And these different types of cells basically exist under slightly different conditions.