The [URE3] phenotype:: evidence for a soluble prion in yeast

被引:24
作者
Fernandez-Bellot, E
Guillemet, E
Ness, F
Baudin-Baillieu, A
Ripaud, L
Tuite, M
Cullin, C
机构
[1] Inst Biochim & Genet Cellulaires, F-33077 Bordeaux, France
[2] Ctr Genet Mol, F-91190 Gif Sur Yvette, France
[3] Univ Kent, Dept Biosci, Canterbury CT2 7NJ, Kent, England
关键词
D O I
10.1093/embo-reports/kvf011
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The aggregation of the two yeast proteins Sup35p and Ure2p is widely accepted as a model for explaining the prion propagation of the phenotypes [PSI+] and [URE3], respectively. Here, we demonstrate that the propagation of [URE3] cannot simply be the consequence of generating large aggregates of Ure2p, because such aggregation can be found in some conditions that are not related to the prion state of Ure2p. A comparison of [PSI+] and [URE3] aggregation demonstrates differences between these two prion mechanisms. Our findings lead us to propose a new unifying model for yeast prion propagation.
引用
收藏
页码:76 / 81
页数:6
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