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Updated: Oct 19, 2026

In Vitro Analysis of E3 Ubiquitin Ligase Function
06:06

In Vitro Analysis of E3 Ubiquitin Ligase Function

Published on: May 14, 2021

The von Hippel-Lindau tumor suppressor protein is a component of an E3 ubiquitin-protein ligase activity

J Lisztwan1, G Imbert, C Wirbelauer

  • 1Friedrich Miescher Institut, CH-4058 Basel, Switzerland.

Genes & Development
|July 27, 1999
PubMed

Insights

The VHL tumor suppressor protein (pVHL) is linked to kidney cancer. This study reveals pVHL

Area of Science:

  • Molecular Biology
  • Oncology
  • Biochemistry

Background:

  • The VHL tumor suppressor gene product, pVHL, is crucial for regulating human kidney cell growth and differentiation.
  • VHL gene inactivation is a frequent event in human kidney cancer, yet pVHL's biochemical function remains unclear.

Purpose of the Study:

  • To elucidate the biochemical function of pVHL.
  • To investigate the role of pVHL in ubiquitination and its potential link to kidney cancer.

Main Methods:

  • In vivo complex analysis involving pVHL, E1, E2, and ubiquitin.
  • Biochemical assays to assess ubiquitination-promoting activity.
  • Analysis of tumor-derived pVHL mutants.

Main Results:

  • pVHL forms a complex with E1, E2, and ubiquitin, exhibiting ubiquitination-promoting activity.
  • This activity requires pVHL to bind elongin C and Cul-2, components related to SCF E3 ligase complexes.
  • Tumor-derived pVHL mutants show a loss of ubiquitination-promoting activity.

Conclusions:

  • pVHL is identified as a component of a potential SCF-like E3 ubiquitin-protein ligase complex.
  • This finding establishes a direct link between the pVHL tumor suppressor and the ubiquitination process.
  • Dysregulation of pVHL-associated ubiquitination may contribute to kidney cancer development.

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