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Affinity Precipitation of Active Rho-GEFs Using a GST-tagged Mutant Rho Protein (GST-RhoA(G17A)) from Epithelial Cell Lysates
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Biologie
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Journal JoVE Biologie
Affinity Precipitation of Active Rho-GEFs Using a GST-tagged Mutant Rho Protein (GST-RhoA(G17A)) from Epithelial Cell Lysates

Affinity Precipitation of Active Rho-GEFs Using a GST-tagged Mutant Rho Protein (GST-RhoA(G17A)) from Epithelial Cell Lysates

DOI:
10.3791/3932-v

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11:28 min

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March 31, 2012

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, , , ,
1Keenan Research Centre, Li Ka Shing Knowledge Institute,St. Michael’s Hospital , 2Department of Surgery,University of Toronto, 3Department of Cell and Developmental Biology,University of North Carolina at Chapel Hill

Chapitres

  • 00:05Titre
  • 01:46Transformation of E. coli with the pGEX-RhoA(G17A) Construct
  • 02:55Preparation of GST-RhoA(G17A) Beads
  • 07:50GEF Pulldown Assay with Nucleotide-free RhoA(G17A) Beads
  • 10:11Representative Pull Down Results
  • 11:03Conclusion

Summary

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Traduction automatique

The method presented here describes an assay to follow activation of RhoA specific GDP/GTP Exchange Factors (GEFs) in cultured cells by making use of a mutant RhoA GST fusion protein that has high affinity for activated GEFs. GEFs are precipitated from cell lysates, detected by Western blotting and quantified by densitometry.

Tags

Affinity PrecipitationRho-GEFsGST-tagged Mutant Rho ProteinCytoskeleton RegulationCellular ProcessesGTPasesGuanine-nucleotide Exchange FactorPathway-specific RegulationRegulatory NetworksActive Pool Of GEFsAffinity Precipitation AssayBurridge Lab

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