Characterization of NF1 Protein Ubiquitination

Abstract

This project aimed at characterization of NF1 protein ubiquitination system by identifying ubiquitination sites and ligases for neurofibromin. We established the method for obtaining ubiquitinated neurofibromin for mass-spectrometric sequencing and identification of ubiquitination sites of neurofibromin. We confirmed neurofibromin ubiquitination and degradation after mitogenic stimulation by serum and LPA. Cbl-Ring finger ubiquitin ligase mediates ubiquitination and degradation of a variety of signaling proteins in the tyrosine kinase receptor signaling pathway. As one of efforts for identifying neurofibromin ubiquitin ligases, we discovered that ubiquitination and degradation of neurofibromin was induced by Cbl which may be responsible for neurofibromin ubiquitination upon activation of tyrosine-kinase receptors.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2008
Accession Number
ADA486692

Entities

People

  • Koko Murakami
  • Victor A. Fried

Organizations

  • New York Medical College

Tags

DTIC Thesaurus Topics

  • Amino Acids Peptides And Proteins
  • Antibodies
  • Biomedical Research
  • Biomolecules
  • Chemical Compounds
  • Chromatography
  • Column Chromatography
  • Degradation
  • Identification
  • Inhibitors
  • Mass Spectrometry
  • Molecules
  • New York
  • Nutrition Disorders
  • Proteins
  • Sequence Analysis
  • Tyrosine

Fields of Study

  • Biology

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