Peptide Affinity Purification for the Isolation and Identification of GPCR-Associated Protein Complexes

  • Pascal Maurice
  • Avais M. Daulat
  • Ralf JockersEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 746)


Protein networks and their dynamic regulation play a fundamental role in biological systems. Seven transmembrane-spanning G protein-coupled receptors (GPCRs) constitute the largest family of membrane receptors controlling the flow of information from the extracellular environment into cells by inducing intracellular signaling pathways. Several GPCR-associated protein complexes (GAPCs), particularly those binding to the intracellular carboxyl-terminus (C-terminus), have been identified over the last 20 years. Recent optimizations in purification protocols and advances in mass spectrometry-based protein identification techniques have considerably accelerated the identification of GAPCs. We will concentrate here on a description of the latest version of the peptide affinity purification approach dedicated to the purification of GAPCs interacting with GPCR C-termini or any other soluble receptor subdomain.

Key words

G protein-coupled receptor (GPCR) Immobilized metal affinity chromatography (IMAC) Protein complexes Proteomics 



We thank Patty Chen (Institut Cochin, Paris) for comments on the manuscript.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Institut CochinUniversité Paris Descartes, INSERMParisFrance

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