And this is in contrast to irreversible inhibition. So in reversible inhibition, we have three types. We have competitive inhibition in which that inhibitor binds directly to the active side. We have on competitive inhibition, in which the inhibitor binds onto that allosteric side that is formed only when that substrate is bound onto the active side of the enzyme. And finally, we have noncompetitive inhibition in which that enzyme always contains an allosteric site. And so what that means is that inhibitor can bind onto that allosteric site of the enzyme regardless of whether or not that substrate is bound onto the active site of the enzyme.