The anaphase-promoting complex (APC/C), a ubiquitin ligase regulating mitotic progression, is a target for spindle assembly checkpoint. UBE2S, an ubiquitin-conjugating enzyme, is identified as a novel factor that elongates ubiquitin chains and promotes APC/C substrate degradation following release from the spindle assembly checkpoint.
- Mathew J. Garnett
- Jörg Mansfeld
- Ashok R. Venkitaraman