UAS regulatory sequences drive of a dominant negative form of Cul1 (comprised of amino acids 1-532, lacking the C-terminal putative Roc1-binding domain and neddylation site).
Expression of lin19DN.Scer\UAS under the control of three copies of Scer\GAL4ppk.PG produces severe dendrite pruning defects in ddaC neurons at 16 hours after puparium formation. No difference is seen at the white prepupal stage.