Ghizlane Maarifi et al. demonstrate that a nuclear pore component, RanBP2, SUMOylates the retroviral restriction factor TRIM5α to promote its antiviral activity. This study suggests an unexpected role of the nuclear pore for regulating anti-viral innate immunity.
- Ghizlane Maarifi
- Juliette Fernandez
- Nathalie J. Arhel