The F-box protein Fbw7 is required for cerebellar development
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منابع مشابه
Phosphorylation-dependent degradation of c-Myc is mediated by the F-box protein Fbw7.
The F-box protein Skp2 mediates c-Myc ubiquitylation by binding to the MB2 domain. However, the turnover of c-Myc is largely dependent on phosphorylation of threonine-58 and serine-62 in MB1, residues that are often mutated in cancer. We now show that the F-box protein Fbw7 interacts with and thereby destabilizes c-Myc in a manner dependent on phosphorylation of MB1. Whereas wild-type Fbw7 prom...
متن کاملThe Stomatin-Like Protein SLP-1 and Cdk2 Interact with the F-Box Protein Fbw7-γ
Control of cellular proliferation is critical to cell viability. The F-box protein Fbw7 (hAgo/hCdc4/FBXW7) functions as a specificity factor for the Skp1-Cul1-F-box protein (SCF) ubiquitin ligase complex and targets several proteins required for cellular proliferation for ubiquitin-mediated destruction. Fbw7 exists as three splice variants but the mechanistic role of each is not entirely clear....
متن کاملThe F-box protein Met30 is required for multiple steps in the budding yeast cell cycle.
The Saccharomyces cerevisiae ubiquitin ligase SCF(Met30) is essential for cell cycle progression. To identify and characterize SCF(Met30)-dependent cell cycle steps, we used temperature-sensitive met30 mutants in cell cycle synchrony experiments. These experiments revealed a requirement for Met30 during both G(1)/S transition and M phase, while progression through S phase was unaffected by loss...
متن کاملF-box-like domain in the polerovirus protein P0 is required for silencing suppressor function.
Plants employ small RNA-mediated posttranscriptional gene silencing as a virus defense mechanism. In response, plant viruses encode proteins that can suppress RNA silencing, but the mode of action of most such proteins is poorly understood. Here, we show that the silencing suppressor protein P0 of two Arabidopsis-infecting poleroviruses interacts by means of a conserved minimal F-box motif with...
متن کاملDefective cardiovascular development and elevated cyclin E and Notch proteins in mice lacking the Fbw7 F-box protein.
The mammalian F-box protein Fbw7 and its Caenorhabditis elegans counterpart Sel-10 have been implicated in the ubiquitin-mediated turnover of cyclin E as well as the Notch/Lin-12 family of transcriptional activators. Both unregulated Notch and cyclin E promote tumorigenesis, and inactivating mutations in human Fbw7 suggest that it may be a tumor suppressor. To generate an in vivo system to asse...
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ژورنال
عنوان ژورنال: Developmental Biology
سال: 2011
ISSN: 0012-1606
DOI: 10.1016/j.ydbio.2011.07.030