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Phase Separation Based Reporters of Protein-Protein Interactions
Phase Separation Based Reporters of Protein-Protein Interactions
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机译:基于相分离的蛋白质 - 蛋白质相互作用
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摘要
The invention is a novel reporter system for measuring protein-protein interactions. The system uses a pair of functionalized coiled coil subunits that spontaneously form two separate homo-oligomers when expressed in cells. The coiled coil subunits are functionalized with fluorescent proteins and complementary interacting proteins. Upon an activation stimulus which promotes the protein-protein interaction, the interacting proteins drive the formation of multivalent aggregates of the homo-oligomers in phase-shifted droplets. The highly concentrated fluorescent proteins in these structures provide high brightness over background fluorescence and a readily observed, quantitative and dynamic indicator of the protein-protein interaction. The reporters and assay methods are amenable to cells and whole organisms.
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