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Related Experiment Videos

Tyrosine O-sulfation.

Denis Corbeil1, Christoph Thiele1, Wieland B Huttner1

  • 1Max-Planck-Institute of Molecular Cell Biology and Genetics, Dresden, Germany.

Current Protocols in Protein Science
|April 23, 2008
PubMed
Summary
This summary is machine-generated.

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This study details methods for detecting O-sulfation of tyrosine residues in proteins. These post-translational modifications are crucial for protein interactions and biological functions, impacting processes from peptide signaling to viral entry.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • O-sulfation of tyrosine residues is a common post-translational modification in eukaryotic cells.
  • This modification occurs in the trans-Golgi network and is catalyzed by tyrosylprotein sulfotransferases.
  • Sulfated tyrosine residues are recognized by their location within specific acidic amino acid sequences.

Purpose of the Study:

  • To outline experimental procedures for identifying sulfated tyrosine residues in proteins.
  • To provide methods for researchers studying protein-protein interactions and biological signaling.

Main Methods:

  • Protein labeling with inorganic [35S]-sulfate.
  • Alkaline hydrolysis of proteins.
  • One-dimensional thin-layer electrophoresis for separation and detection.

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Main Results:

  • The described methods enable the detection of tyrosine O-sulfation.
  • These techniques can confirm the presence of sulfated tyrosine residues in a protein of interest.

Conclusions:

  • Tyrosine sulfation is a significant post-translational modification influencing protein function and interactions.
  • The provided protocols offer a reliable approach to investigate tyrosine sulfation in various biological contexts.