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N-Terminal Arginylation Pull-down Analysis Using the R-Catcher Tool.

Taewook Seo1,2,3, Goeun Han1,2, Hyunjoo Cha-Molstad1,2

  • 1Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Republic of Korea.

Methods in Molecular Biology (Clifton, N.J.)
|April 3, 2023
PubMed
Summary
This summary is machine-generated.

Protein arginylation, a key posttranslational modification, influences protein fate and signaling. A new tool, R-catcher, enables researchers to study arginylation patterns and identify disease therapeutic targets.

Keywords:
ArginylationPull-downR-catcher

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Protein arginylation is a posttranslational modification impacting protein function and degradation.
  • Historically, arginylated proteins were thought to be solely destined for proteolysis.
  • Recent findings indicate arginylation also regulates signaling pathways.

Purpose of the Study:

  • To introduce a novel molecular tool for investigating protein arginylation.
  • To enable the capture of cellular arginylation patterns under diverse conditions.
  • To facilitate the identification of potential therapeutic targets in diseases.

Main Methods:

  • Development of R-catcher, a modified ZZ domain of p62/sequestosome-1.
  • Engineered ZZ domain for enhanced specificity and affinity to N-terminal arginine.
  • Application of R-catcher to analyze cellular arginylation patterns.

Main Results:

  • R-catcher effectively captures cellular arginylation patterns.
  • The tool allows for analysis under various stimuli and conditions.
  • Demonstrated potential for identifying disease-related arginylation targets.

Conclusions:

  • R-catcher is a valuable tool for studying protein arginylation.
  • This tool advances understanding of arginylation's role beyond proteolysis.
  • R-catcher can aid in discovering novel therapeutic strategies for diseases.