
Presenilin-1(PS-1)andPresenilin-2(PS-2)areintegralmembraneproteinsthatcontainmultipletransmembranedomains.Botharepredominantlylocatedwithintheendoplasmicreticulum(ER)andearlyGolgiapparatus.Theyareprimarilyexpressedinneuronsandareubiquitouslyexpressedinthebrain.PS-1andPS-2areproteolyticallycleavedtogenerateanN-terminalfragment(NTF)andaC-terminalfragment(CTF).MutationsinthegeneforPresenilinmayplayanimportantroleinthepathologyofAlzheimersdisease.
Image:Presenilin2staininginparaffin-embeddedhumanbrain,showingbothnuclearandcytoplasmicproteinlocalization.DatacourtesyofCellSignalingTechnology,Inc.
Note;Immunohistochemistry,immunoprecipitation,immunocytochemistryandwesternblotprotocolsonDatasheet.