UASt regulatory sequences drive expression of a mutated form of Vps35 that carries an amino acid substitution equivalent to D620N in the orthologous human VPS35 gene, a change identified in a number of families with dominantly inherited, late-onset Parkinson's disease. (FlyBase curator comment: the mutation in the Vps35 gene is given as D650N in FBrf0229809, however analysis of the release 6.32 annotated gene model indicates the change to be D647N)