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Application of Biolayer Interferometry (BLI) for Studying Protein-Protein Interactions in Transcription
JoVE Journal
Biochimica
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JoVE Journal Biochimica
Application of Biolayer Interferometry (BLI) for Studying Protein-Protein Interactions in Transcription
DOI:

07:18 min

July 26, 2019

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Capitoli

  • 00:04Titolo
  • 00:59Biosensor Hydration and Assay Set-Up
  • 02:51Loading of Ligand onto Biosensor and Washing Away Additional Ligand
  • 03:43Association of Analyte to Ligand and Dissociation of Analyte from Ligand
  • 05:41Results: A 28 Amino Acid Middle Region of GrgA Binds σ28 In Vitro
  • 06:45Conclusion

Summary

Traduzione automatica

Interactions of transcription factors (TFs) with the RNA polymerase are usually studied using pulldown assays. We apply a Biolayer Interferometry (BLI) technology to characterize the interaction of GrgA with the chlamydial RNA polymerase. Compared to pulldown assays, BLI detects real-time association and dissociation, offers higher sensitivity, and is highly quantitative.

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