Abstract
The von Hippel-Lindau (VHL) tumor suppressor gene is mutated in most human kidney cancers. The VHL protein is part of a complex that includes Elongin B, Elongin C, and Cullin-2, proteins associated with transcriptional elongation and ubiquitination. Here it is shown that the endogenous VHL complex in rat liver also includes Rbx1, an evolutionarily conserved protein that contains a RING-H2 fingerlike motif and that interacts with Cullins. The yeast homolog of Rbx1 is a subunit and potent activator of the Cdc53- containing SCF(Cdc4) ubiquitin ligase required for ubiquitination of the cyclin-dependent kinase inhibitor Sic1 and for the G1 to S cell cycle transition. These findings provide a further link between VHL and the cellular ubiquitination machinery.
Original language | English (US) |
---|---|
Pages (from-to) | 657-661 |
Number of pages | 5 |
Journal | Science |
Volume | 284 |
Issue number | 5414 |
DOIs | |
State | Published - Apr 23 1999 |
Externally published | Yes |
ASJC Scopus subject areas
- General