What molecular mechanism enables VCPIP1 to block K48 ubiquitination of IRAK1/2 without catalytic activity?

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Description

The abstract reveals that VCPIP1 prevents IRAK1/2 ubiquitination through a non-catalytic mechanism, contradicting the typical function of deubiquitinating enzymes. Understanding this novel mechanism could reveal new therapeutic targets for neuroinflammation in neurodegenerative diseases.

Gap type: unexplained_observation Source paper: VCPIP1 potentiates innate immune responses by non-catalytically reducing the ubiquitination of IRAK1/2. (2025, Cell reports, PMID:40581931)

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