UASt regulatory sequences drive expression of full-length Hsap\ATXN3 with a long polyQ repeat of Q88 and with a mutation in the Josephin domain (amino acid replacement C14A). The Hsap\ATXN3 sequence is tagged at the N-terminal end with Tag:MYC.
Expression of Hsap\MJDfl.Q88.C14A.Scer\UAS.T:Hsap\MYC under the control of Scer\GAL4GMR.PF results in a very severe eye degeneration phenotype.