Izimpethi zokuhlola amaprotini zikhona ngemibono ezininzi ngenxa yokuba zilungiselelwa ukusetshenziswa kwezicala ezintleni nezincalaki yezesayensi. Zisetshenziswa futhi ngezimpawu zamaprotini nezintsha ezidingekileyo nokuvumela ukuphakamisa okulandelayo kwisekhono sesayithi. Izimpethi zilungiselelwa ngamavolamu emlandelweni wokufunda nokufundiswa, okuyingxenye ezindwendwe zokuthi ucinga lokunqumelela izimpethi ezincedwayo nokuziphephayo.