Fig. 6. Deneddylation activity of DEN1. Neddylated proteins in DEN1null larval lysates (lane 2) could be depleted by the co-incubated GST-DEN1 (lane 4), displaying a pattern largely identical to that detected in the wild-type lysates (lane 1). When the DEN1null lysates were treated with purified GST (lane 3) or GST-DEN1CA (lane 5), the neddylation pattern is similar to that without any treatment (lane 2).