How intracellular cAMP activate PKA is well-characterized, but PKA inactivation remains poorly understood. Here, Rinaldi et al. show that CHIP/HSP70 ubiquitinates the catalytic subunit of PKA, with implications for the human disease spinocerebellar ataxia 16, as patients often have CHIP mutations.
- Laura Rinaldi
- Rossella Delle Donne
- Antonio Feliciello