A new eye on NLR proteins: focused on clarity or diffused by complexity?
Vera Bonardi1, Karen Cherkis, Marc T Nishimura
1Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA.
Current Opinion in Immunology
|February 7, 2012
Summary
Nucleotide-binding domain leucine-rich repeat proteins (NLRs) are key innate immune receptors. This review explores their diverse functions and activation mechanisms in humans and plants, highlighting recent discoveries in immunology.
Area of Science:
- Immunology
- Molecular Biology
- Plant Science
Background:
- Nucleotide-binding domain leucine-rich repeat proteins (NLRs) are a major class of intracellular innate immune receptors in both plants and animals.
- Understanding the complex functions of NLRs is a significant challenge in modern immunology.
Purpose of the Study:
- To review recent advancements in elucidating NLR functions in humans and plants.
- To compare unconventional aspects of NLR proteins across different kingdoms.
- To highlight novel findings regarding NLR activation, localization, and signaling.
Main Methods:
- Comparative analysis of NLR protein functions across kingdoms (plants and animals).
- Review of recent literature on NLR activation mechanisms, including P-loop independent pathways.
- Examination of studies on NLR trafficking, oligomerization, and multimerization in signaling.
- Exploration of expanded NLR functions beyond pathogen recognition.
Main Results:
- NLRs exhibit diverse activation mechanisms, including P-loop independent pathways.
- Nuclear-cytoplasmic trafficking plays a crucial role in NLR function.
- Oligomerization and multimerization are essential for NLR-mediated signaling.
- Several NLR proteins have functions extending beyond pathogen recognition.
Conclusions:
- NLRs possess conserved yet distinct features across plants and animals.
- Recent research has significantly expanded our understanding of NLR complexity and function.
- Further investigation into NLRs promises new insights into innate immunity and beyond.
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