Pepsin exhibits maximal activity at pH 2.0 and is inactive at pH 6.5 and above, however pepsin is not fully denatured or irreversibly inactivated until pH 8.0.
A pepsina mostra a súa actividade máxima a pH 2,0 e é inactiva a pH 6,5 e superior; porén, a pepsina non está completamente desnaturalizada ou inactivada irreversiblemente ata o pH 8,0.