E3 ligases that attach ubiquitin to proteins destined for proteasomal degradation are regulated by neddylation. In this study, Xie et al. show that the HECT ligase Smurf1, which is a ubiquitin ligase, is also neddylated, and this post-translational modification enhances its ligase activity.
- Ping Xie
- Minghua Zhang
- Lingqiang Zhang
