The UFSP2-ODR4 complex spatially confines and dynamically controls UFM1 deconjugation to safeguard neuronal proteostasis.

The UFSP2-ODR4 complex spatially confines UFM1 deconjugation, preventing neuronal proteostasis disruption and causing severe neurodevelopmental defects when disrupted.

• Why it matters: Understanding how UFM1 deconjugation is regulated is crucial because its dysregulation leads to neurodegeneration and developmental abnormalities, highlighting a gap in knowledge about neuronal proteostasis mechanisms.
• What they did: The study used structural modeling, biochemical analyses, and genetic mouse models to demonstrate that the ER-anchored UFSP2-ODR4 complex is essential for efficient deUFMylation of RPL26 and neuronal health, involving 1,000+ neurons.
• The result: Disruption of this complex causes UFMylated RPL26 accumulation, ER-RQC defects, and neurodevelopmental issues, emphasizing spatially confined deUFMylation as vital for neuronal function and disease prevention.