Deltex E3s modify ADP-ribosylated targets with ubiquitin, creating a hybrid modification whose readers remains unknown. Here, the authors synthesise a non-hydrolysable probe that mimics the modification and identify RNF114 as an interactor. RNF114 binds tightly to this modification and further elongates it with a K11-linked ubiquitin chain.
- Max S. Kloet
- Chatrin Chatrin
- Gerbrand J. van der Heden van Noort