Journal
RICE
Volume 7, Issue -, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s12284-014-0011-8
Keywords
Interactome; Split luciferase complementation; Regulated protein-protein interactions
Categories
Funding
- USDA Cooperative State Research, Education and Extension Service - National Research Initiative - Plant Genome Program [2006-35604-16627]
- Grants-in-Aid for Scientific Research [26113713] Funding Source: KAKEN
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Background: The rice interactome, in which a network of protein-protein interactions has been elucidated in rice, is a useful resource to identify functional modules of rice signal transduction pathways. Protein-protein interactions occur in cells in two ways, constitutive and regulative. While a yeast-based high-throughput method has been widely used to identify the constitutive interactions, a method to detect the regulated interactions is rarely developed for a large-scale analysis. Results: A split luciferase complementation assay was applied to detect the regulated interactions in rice. A transformation method of rice protoplasts in a 96-well plate was first established for a large-scale analysis. In addition, an antibody that specifically recognizes a carboxyl-terminal fragment of Renilla luciferase was newly developed. A pair of antibodies that recognize amino-and carboxyl-terminal fragments of Renilla luciferase, respectively, was then used to monitor quality and quantity of interacting recombinant-proteins accumulated in the cells. For a proof-of-concept, the method was applied to detect the gibberellin-dependent interaction between GIBBERELLIN INSENSITIVE DWARF1 and SLENDER RICE 1. Conclusions: A method to detect regulated protein-protein interactions was developed towards establishment of the rice interactome.
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