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Identification of protein interaction partners by the yeast two-hybrid system

Maria-Paz Garcia-Cuellar1, Deniz Mederer, Robert K Slany

  • 1Department of Genetics, Staudtstrasse 5, 91058, Erlangen, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|March 12, 2009
PubMed

Insights

The yeast two-hybrid system identifies protein interactions crucial for understanding oncogene mechanisms in childhood leukemia. This guide offers a streamlined protocol for conducting and evaluating these genetic screens in standard molecular biology labs.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • The yeast two-hybrid system is a genetic technique for identifying direct protein interaction partners.
  • Understanding protein interactions is key to elucidating oncogene transformation mechanisms, particularly in childhood leukemia.
  • Mixed lineage leukemia (MLL) gene fusions are implicated in certain leukemias, necessitating methods to study their interactions.

Purpose of the Study:

  • To provide a streamlined and accessible protocol for performing and evaluating yeast two-hybrid screens.
  • To enable average molecular biology laboratories to conduct these screens effectively.
  • To detail the construction of bait vectors and screening protocols for MLL fusion partners.

Main Methods:

  • Description of the biological principles behind the yeast two-hybrid system.
  • Detailed protocols for constructing bait vectors.
  • Two comprehensive screening methods: yeast mating and yeast transformation.

Main Results:

  • A standardized protocol for yeast two-hybrid screening is presented.
  • Guidelines for the evaluation of experimental results are provided.
  • The method facilitates the discovery of proteins interacting with MLL fusion partners.

Conclusions:

  • The described protocol simplifies the execution and evaluation of yeast two-hybrid screens.
  • This method is valuable for identifying protein interactors of MLL fusion partners, aiding leukemia research.
  • The guide empowers molecular biology labs to utilize this powerful genetic technique.

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