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Related Experiment Video

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Localization of SUMO-modified Proteins Using Fluorescent Sumo-trapping Proteins
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Using Biotinylated SUMO-Traps to Analyze SUMOylated Proteins.

Valérie Lang1, Elisa Da Silva-Ferrada1,2, Rosa Barrio3

  • 1Ubiquitylation and Cancer MolecularBiology (UMCB) Laboratory, Inbiomed, 20009, San Sebastian-Donostia, Gipuzkoa, Spain.

Methods in Molecular Biology (Clifton, N.J.)
|September 16, 2016
PubMed
Summary

This study introduces biotinylated SUMO-traps (bioSUBEs) for efficient capture of SUMO chains and SUMOylated proteins. BioSUBEs offer a low-background alternative for identifying and characterizing endogenous SUMO targets.

Keywords:
AnalysisBiotinylationBirAPurificationSIMsSUBEsSUMOylation

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Proteomics

Background:

  • SUMO-interacting motifs (SIMs) are crucial for recognizing SUMOylated proteins.
  • Tandem SIMs (SUMO-traps) enhance affinity for protein enrichment.
  • Existing methods may introduce background noise, complicating analysis.

Purpose of the Study:

  • To present a protocol for producing biotinylated SUMO-traps (bioSUBEs).
  • To demonstrate bioSUBEs' utility in capturing SUMO chains and specific SUMOylated proteins.
  • To offer an alternative tool for characterizing endogenous SUMO targets with reduced background.

Main Methods:

  • Production of biotinylated SUMO-traps (bioSUBEs).
  • Application of bioSUBEs to capture SUMO chains.
  • Enrichment of known SUMOylated proteins like p53 and IkBα.

Main Results:

  • Successfully produced biotinylated SUMO-traps (bioSUBEs).
  • Demonstrated efficient capture of SUMO chains and target proteins.
  • bioSUBEs reduce background noise compared to larger tags, beneficial for mass spectrometry.

Conclusions:

  • Biotinylated SUMO-traps (bioSUBEs) are effective tools for capturing SUMOylated proteins.
  • bioSUBEs provide a valuable alternative for characterizing endogenous SUMO targets.
  • This method facilitates the study of SUMOylation in biological systems.