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A universal tag for recombinant proteins

W Luo1, T C Liang, J M Li

  • 1Department of Molecular Pathology, University of Texas M.D. Anderson Cancer Center, Houston 77030, USA.

Archives of Biochemistry and Biophysics
|May 15, 1996
PubMed
Summary
This summary is machine-generated.

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Researchers developed a short RYIRS peptide tag for recombinant proteins, easily added via PCR. This tag aids protein detection and localization studies, simplifying protein research workflows.

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Protein Engineering

Background:

  • Recombinant protein tags are crucial for identification, purification, and monitoring cellular localization.
  • Existing tags can be lengthy and require complex subcloning or ligation methods for incorporation.

Purpose of the Study:

  • To introduce a short peptide tag (RYIRS) that can be easily incorporated into recombinant proteins using Polymerase Chain Reaction (PCR).
  • To demonstrate the utility of this tag for protein detection and localization studies.

Main Methods:

  • Incorporation of the RYIRS peptide tag at the C-termini of recombinant proteins via PCR.
  • Detection of tagged proteins using a monoclonal antibody (mAb) specific to the RYIRS sequence.
  • Application of the tagged proteins in Western blot analysis, immunofluorescence staining, and immunoprecipitation.

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Main Results:

  • The RYIRS tag was successfully and easily incorporated into recombinant proteins using PCR.
  • The mAb effectively detected the tagged proteins in various biochemical and cellular assays.
  • Tag length variations allowed for control over the reactivity between the tag and the mAb.
  • The tag's C-terminal requirement confirmed proper protein translation and termination.

Conclusions:

  • The short RYIRS peptide tag offers a simplified method for recombinant protein manipulation and detection.
  • This tag facilitates protein analysis and can serve as an indicator of proper protein expression and termination.
  • The RYIRS tag provides a versatile tool for molecular biology research, enhancing protein studies.