Tau-441orTau-FisamemberoftheTaufamilyofproteinswhichfunctiontost
ABIlizethemicrotubulesbybindingtothem.TauproteinsaresubjecttophosphorylationandthisphenomenonregulatestheassociationoftheTauproteinwiththemicrotubules(1).DepositsofAlzheimer"sdiseaseAD-associatedproteins,suchashyperphosphorylatedTau,aswellasothersharedmisfoldedproteins,suchas,β-amyloidprecursorprotein(βAPP),ubiquitin,andvariouschaperonesandproteinkinasesarethoughttoplayapathologicroleinthecognitivedeclineandmuscularfailure.MalfunctioningofTauproteinsisassociatedwithmicrotubulesdisintegrationandcollapsingoftheneuronaltransportsystem(2).