A stringent yeast two-hybrid matrix screening approach for protein-protein 
interaction discovery

Worseck, Josephine; Grossmann, Arndt; Weimann, Mareike; Hegele, Anna K.; Stelzl, Ulrich

doi:10.1007/978-1-61779-455-1_4

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A stringent yeast two-hybrid matrix screening approach for protein-protein interaction discovery

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Worseck, Josephine
Independent Junior Research Groups (OWL), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Grossmann, Arndt
Molecular Interaction Networks (Ulrich Stelzl), Independent Junior Research Groups (OWL), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Weimann, Mareike
Independent Junior Research Groups (OWL), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Hegele, Anna K.
Independent Junior Research Groups (OWL), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Stelzl, Ulrich
Molecular Interaction Networks (Ulrich Stelzl), Independent Junior Research Groups (OWL), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Citation

Worseck, J., Grossmann, A., Weimann, M., Hegele, A. K., & Stelzl, U. (2012). A stringent yeast two-hybrid matrix screening approach for protein-protein interaction discovery. Methods in Molecular Biology, 812, 63-87. doi:10.1007/978-1-61779-455-1_4.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-E7B4-4

Abstract

The yeast two-hybrid (Y2H) system is currently one of the most important techniques for protein-protein interaction (PPI) discovery. Here, we describe a stringent three-step Y2H matrix interaction approach that is suitable for systematic PPI screening on a proteome scale. We start with the identification and elimination of autoactivating strains that would lead to false-positive signals and prevent the identification of interactions. Nonautoactivating strains are used for the primary PPI screen that is carried out in quadruplicate with arrayed preys. Interacting pairs of baits and preys are identified in a pairwise retest step. Only PPI pairs that pass the retest step are regarded as potentially biologically relevant interactions and are considered for further analysis.