Genomic fragment containing the park gene, into which a Tag:CS(TEVp) cleavage site has been inserted (within the open reading frame).
The kinetics of the clearance of the paternal mitochondrial derivatives is normal in embryos derived from park25/parkZ472 males whose fertility has been rescued until a late spermatid stage by expression of parkT:Zzzz\TEV.CS followed by inactivation of the rescuing protein using cleavage by Zzzz\NIadj.PP.