Rhomboid Family Pseudoproteases Use the ER Quality Control Machinery to Regulate Intercellular Signaling
2011

How iRhoms Regulate Intercellular Signaling

publication Evidence: high

Author Information

Author(s): Markus Zettl, Colin Adrain, Kvido Strisovsky, Viorica Lastun, Matthew Freeman

Primary Institution: MRC Laboratory of Molecular Biology, Cambridge, UK

Hypothesis

Do iRhoms inhibit rhomboid-dependent signaling in Drosophila and mammals?

Conclusion

iRhoms regulate intercellular signaling by promoting the degradation of EGF ligands, thereby inhibiting EGFR signaling.

Supporting Evidence

  • iRhoms inhibit EGF receptor signaling in Drosophila, thereby regulating sleep.
  • iRhoms are localized in the endoplasmic reticulum and promote degradation of EGF ligands.
  • The cellular function of iRhoms is conserved in mammals.
  • iRhoms can downregulate mammalian EGF family ligands.

Takeaway

iRhoms are proteins that help control how cells communicate with each other by making sure certain signals are not too strong, which helps keep everything balanced.

Methodology

The study used genetics and cell biology techniques to analyze the function of iRhoms in Drosophila and mammalian cells.

Limitations

The specific roles of iRhoms in other signaling pathways beyond EGFR were not fully explored.

Digital Object Identifier (DOI)

10.1016/j.cell.2011.02.047

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