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Isolating Interaction-Null/Impaired Mutants Using the Yeast Two-Hybrid Assay
Published on: December 29, 2023
Rice mitogen-activated protein kinase interactome analysis using the yeast two-hybrid system
Raksha Singh1, Mi-Ok Lee, Jae-Eun Lee
1Department of Molecular Biology, College of Life Sciences, Sejong University, Gunja-dong, Gwangjin-gu, Seoul 143-747, Republic of Korea.
Plant Physiology
|July 13, 2012
Summary
This study maps the first plant mitogen-activated protein kinase (MAPK) interactome in rice, identifying 74 novel interacting proteins. This reveals a complex network crucial for diverse plant physiological functions.
Area of Science:
- Plant molecular biology
- Proteomics
- Signal transduction
Background:
- Mitogen-activated protein kinase (MAPK) cascades are vital for transmitting extracellular signals in plants.
- Understanding the complete physical MAPK interactome in plants is crucial but remains fragmented.
Purpose of the Study:
- To systematically map the first plant MAPK-interacting protein network in the model crop rice (Oryza sativa).
- To elucidate the proteome-wide network of rice MAPKs and their interactors.
Main Methods:
- Yeast two-hybrid system
- Coimmunoprecipitation
- Pull-down assays
- Bimolecular fluorescence complementation
- Subcellular localization
- Kinase assays
Main Results:
- Identified 80 nonredundant interacting protein pairs (74 nonredundant interactors) for rice MAPKs.
- The interactome includes membrane-associated proteins, MAP2Ks, MAPKs, and 59 putative substrates, notably 18 transcription factors.
- OsMPK1 was highlighted, interacting with 41 unique proteins, representing over 50% of the mapped network.
Conclusions:
- The study establishes a novel, proteome-wide MAPK interactome network in rice.
- Results indicate MAPK involvement in diverse physiological functions through interactions with various proteins.
- This work provides a valuable resource for further research into the rice MAPK interactome.
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