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Tandem Affinity Purification of Protein Complexes from Eukaryotic Cells
Published on: January 26, 2017
Tandem affinity purification vectors for use in gram positive bacteria
Xiao Yang1, Geoff P Doherty, Peter J Lewis
1School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia.
Plasmid
|December 21, 2007
Summary
New plasmid vectors enhance protein complex isolation in Gram-positive bacteria. These vectors offer versatile tagging options, improving the efficiency of tandem affinity purification (TAP) and fluorescent protein fusion construction.
Area of Science:
- Molecular Biology
- Biochemistry
- Microbiology
Background:
- Tandem affinity purification (TAP) is crucial for isolating protein complexes.
- Existing methods for Gram-positive bacteria have limitations in efficiency and versatility.
Purpose of the Study:
- To develop novel plasmid vectors for efficient protein complex isolation in Gram-positive bacteria.
- To provide versatile tagging options for enhanced protein purification and analysis.
Main Methods:
- Construction of plasmid vectors utilizing the SPA tag with variants (3C protease site, GST moiety).
- Testing vector compatibility with fluorescent protein fusion vectors.
- Application in tandem affinity purification of protein complexes.
Main Results:
- Developed SPA tag vectors with 3C protease sites for low-temperature purification.
- Incorporated a GST moiety as an alternative tagging option.
- Demonstrated compatibility with fluorescent protein fusion vectors for streamlined gene tagging.
Conclusions:
- The novel plasmid vectors significantly improve protein complex isolation in Gram-positive bacteria.
- These vectors offer enhanced flexibility and efficiency for molecular biology research.
- Facilitates the construction of multi-tagged genes from a single PCR product.
