The ubiquitin ligase Mdm2 promotes both proteolytic degradation of the tumour suppressor p53 and its translation. Fahraeus and colleagues report an additional layer of regulation: p53 mRNA binds directly to Mdm2 protein to inhibit ubiquitin ligase activity, promoting its own translation.
- Marco M. Candeias
- Laurence Malbert-Colas
- Robin Fåhraeus