In situ Dephosphorylation Assay with Recombinant Nil Phosphatase

The activity of numerous autophagy-related proteins depends on their phosphorylation status, which places importance on understanding the responsible kinases and phosphatases. Great progress has been made in identifying kinases regulating autophagy, but much less is known about the phosphatases counteracting their function. Genetic screens and modern proteomic approaches provide powerful tools to identify candidate phosphatases, but further experiments are required to assign direct roles for candidates. We have devised a novel protocol to test the role of purified phosphatases in dephosphorylating specific targets in situ. This approach has the potential to visualize context-specific differences in target dephosphorylation that are not easily detected by lys ate-based approaches such as Western blots.

Automated summary

Understanding the phosphorylation status of autophagy-related proteins is crucial, with current research focusing more on kinases rather than phosphatases. Genetic screens and proteomic approaches are effective tools for identifying candidate phosphatases, but further experiments are needed to confirm their direct roles.