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WBP1L, a transmembrane adaptor protein involved in the regulation of hematopoiesis, is controlled by CRL1β-TrCP ubiquitin ligases
I. Duric, I. Krayem, T. Brdicka
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články
- MeSH
- adaptorové proteiny signální transdukční metabolismus MeSH
- HEK293 buňky MeSH
- hematopoéza * MeSH
- lidé MeSH
- makrofágy metabolismus MeSH
- membránové proteiny metabolismus MeSH
- myši MeSH
- proteiny s repetitivními sekvencemi beta-transducinu metabolismus MeSH
- signální transdukce MeSH
- ubikvitinligasy * metabolismus MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
WBP1L is a broadly expressed transmembrane adaptor protein involved in regulating hematopoietic stem cell function and T cell development. It interacts with NEDD4-family E3 ubiquitin ligases and regulates important chemokine receptor CXCR4. Using tandem affinity purification coupled with mass spectrometry, we identified novel WBP1L interactions with the IFNγ receptor and the Cullin-RING ubiquitin ligases CRL1β-TrCP1/2. We found that WBP1L interaction with the IFNγ receptor serves to downregulate proximal IFNγ receptor signaling in female macrophages, while the interaction with CRL1β-TrCP1/2 ubiquitin ligases regulates WBP1L protein levels. Disrupting this interaction, as well as inhibiting proteasome activity or neddylation, increased WBP1L protein levels, demonstrating that CRL1β-TrCP1/2 ubiquitin ligases regulate WBP1L protein abundance. These data provide important insights into the mechanisms controlling WBP1L function.
Citace poskytuje Crossref.org
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- $a WBP1L is a broadly expressed transmembrane adaptor protein involved in regulating hematopoietic stem cell function and T cell development. It interacts with NEDD4-family E3 ubiquitin ligases and regulates important chemokine receptor CXCR4. Using tandem affinity purification coupled with mass spectrometry, we identified novel WBP1L interactions with the IFNγ receptor and the Cullin-RING ubiquitin ligases CRL1β-TrCP1/2. We found that WBP1L interaction with the IFNγ receptor serves to downregulate proximal IFNγ receptor signaling in female macrophages, while the interaction with CRL1β-TrCP1/2 ubiquitin ligases regulates WBP1L protein levels. Disrupting this interaction, as well as inhibiting proteasome activity or neddylation, increased WBP1L protein levels, demonstrating that CRL1β-TrCP1/2 ubiquitin ligases regulate WBP1L protein abundance. These data provide important insights into the mechanisms controlling WBP1L function.
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