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Combining SRET2 and BiFC to Study GPCR Heteromerization and Protein–Protein Interactions

  • Amina M. Bagher
  • Melanie E. M. Kelly
  • Eileen M. Denovan-WrightEmail author
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1947)

Abstract

G protein-coupled receptors (GPCRs) are the target for many drugs. Evidence continues to accumulate demonstrating that multiple receptors form homo- and heteromeric complexes, which in turn dynamically couple with G proteins, and other interacting proteins. Here, we describe a method to simultaneously determine the identity of up to four distinct constituents of GPCR complexes using a combination of sequential bioluminescence resonance energy transfer 2—fluorescence resonance energy transfer (SRET2) with bimolecular fluorescence complementation (BiFC). The method is amenable to moderate throughput screening of changes in response to ligands and time-course analysis of protein–protein oligomerization.

Key words

BiFC Bimolecular fluorescence complementation BRET2, Bioluminescence energy transfer 2 FRET, Fluorescence resonance energy transfer SRET2, Sequential BRET2-FRET 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Amina M. Bagher
    • 1
    • 2
  • Melanie E. M. Kelly
    • 1
    • 3
  • Eileen M. Denovan-Wright
    • 1
    Email author
  1. 1.Department of PharmacologyDalhousie UniversityHalifaxCanada
  2. 2.Department of Pharmacology and ToxicologyKing AbdulAziz UniversityJeddahSaudi Arabia
  3. 3.Department of Ophthalmology and Visual SciencesDalhousie UniversityHalifaxCanada

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