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Deficiency of S6 kinase (S6K) extends the lifespan of multiple species, but the underlying mechanisms are unclear. To discover potential effectors of S6K-mediated longevity, we performed a proteomics analysis of long-lived rsks-1/S6K C. elegans mutants compared to wild-type animals. We identified the arginine kinase ARGK-1 as the most significantly enriched protein in rsks-1/S6K mutants. ARGK-1 is...
The COP9 signalosome (CSN) is thought to maintain the stability of cullin-RING ubiquitin ligases (CRL) by limiting the autocatalytic destruction of substrate adapters such as F box proteins (FBPs). CAND1, a protein associated with unneddylated CUL1, was proposed to assist in this role in an as yet unclear fashion. We found that only a subset of Schizosaccharomyces pombe FBPs, which feature a critical...
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