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Related Experiment Video

Updated: Jul 8, 2026

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle

Published on: March 5, 2019

R protein activation: another player revealed.

Jacqueline Monaghan¹, Xin Li

¹Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.

Cell Host & Microbe

|January 15, 2008

Summary

Plant resistance proteins identify pathogens to trigger immunity. A new study reveals CRT1, an ATPase crucial for resistance to turnip crinkle virus, suggesting a role in activating resistance proteins.

Area of Science:

Plant immunity
Molecular plant pathology
Virology

Background:

Resistance proteins are key mediators of plant innate immunity, recognizing pathogen effectors and initiating defense cascades.
Turnip crinkle virus (TCV) poses a significant threat to Brassicaceae crops, necessitating a deep understanding of resistance mechanisms.
The Resistance (R) protein HRT confers resistance to TCV in Arabidopsis, but its activation mechanism remains incompletely understood.

Discussion:

Kang et al. identify CRT1, an ATPase, as a critical component in HRT-mediated resistance to TCV.
CRT1's interaction with multiple R proteins suggests a conserved role in the activation of the plant immune receptor complex.
This ATPase activity may be essential for the conformational changes required for R protein signaling.

Key Insights:

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CRT1 is an ATPase essential for Arabidopsis resistance to turnip crinkle virus.
CRT1 interacts with various Resistance (R) proteins, indicating a broad role in plant immunity.
The findings suggest CRT1 is a key regulator of R protein activation and downstream defense signaling.

Outlook:

Further investigation into CRT1's ATPase mechanism could reveal novel targets for engineering crop disease resistance.
Understanding CRT1's interactions with diverse R proteins may lead to strategies for pyramiding resistance against multiple pathogens.
Exploring CRT1 homologs in other plant species could uncover conserved immune pathways and potential vulnerabilities in pathogen recognition.