So let's say that that green structure is transformed into this final molecule, which is our product, and this will only take place if no inhibitors actually bound onto that allosteric site. Now, instead, we can also have this pathway that is followed. If this is in close proximity, it binds onto the allosteric site to form that enzyme inhibitor complex. But just because we form the enzyme inhibitor complex, that doesn't mean that the substrate will not be able to bind into the active site. In fact, the substrate usually does bind into the active site. But the problem is, once we form the enzyme substrate inhibitor, as in this particular case, that prevents that enzyme from actually catalyzing the transformation of that green substrate into this purple product.