Improvement of a Venus-Based Bimolecular Fluorescence Complementation Assay to Visualize bFos-bJun Interaction in Living Cells

  • NAKAGAWA Chika
    Laboratory of Molecular Biology and Cell Informatics, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
  • INAHATA Kazuto
    Laboratory of Molecular Biology and Cell Informatics, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
  • NISHIMURA Shigenori
    Laboratory of Molecular Biology and Cell Informatics, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
  • SUGIMOTO Kenji
    Laboratory of Molecular Biology and Cell Informatics, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University

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Bimolecular fluorescence complementation (BiFC) assay makes it possible to visualize protein-protein interactions in living cells. In this assay, Venus, a bright-yellow variant of green fluorescent protein, is known to produce fluorescent backgrounds due to non-specific interactions. In this study we found that the V150A mutation increased by 8.6-fold the signal-to-noise ratio in the BiFC assay of bFos-bJun interaction.

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