1. Academic Validation
  2. Protein-Protein Interactions: Pull-Down Assays

Protein-Protein Interactions: Pull-Down Assays

  • Methods Mol Biol. 2017;1615:247-255. doi: 10.1007/978-1-4939-7033-9_20.
Arthur Louche 1 Suzana P Salcedo 1 Sarah Bigot 2
Affiliations

Affiliations

  • 1 Molecular Microbiology and Structural Biochemistry, CNRS UMR 5086, Université Lyon 1, Institut de Biologie et Chimie des Protéines, 7 Passage du Vercors, 69 367, Lyon Cedex 07, France.
  • 2 Molecular Microbiology and Structural Biochemistry, CNRS UMR 5086, Université Lyon 1, Institut de Biologie et Chimie des Protéines, 7 Passage du Vercors, 69 367, Lyon Cedex 07, France. sarah.bigot@ibcp.fr.
Abstract

Determining protein partners is an essential step toward understanding protein function and identifying relevant biological pathways. Many methods exist for investigating protein-protein interactions. The pull-down assay is an in vitro technique used to detect physical interactions between two or more proteins and an invaluable tool for confirming a predicted protein-protein interaction or identifying novel interacting partners. This method typically involves the use of affinity purification with various wash and elution steps. In this chapter, we describe how an interaction between two purified Bacterial proteins or between Bacterial and eukaryotic proteins can be detected by pull-down experiments.

Keywords

Affinity purification; Protein–protein interactions; Pull-down; Tagged protein.

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