Elastase suna ne da ke nufin wani enzyme da ke rushe elastin, furotin da ke ba da elasticity ga kyallen jikin jiki, kamar fata, tasoshin jini, da huhu. Ana samar da Elastase ta nau'ikan sel daban-daban a cikin jiki, gami da wasu nau'ikan farin jini, kuma yana shiga cikin tsarin ilimin halittar jiki daban-daban, kamar gyaran nama da kumburi. A wasu lokuta, wuce haddi na elastase na iya haifar da lalacewa da cututtuka.