Prion formation by a yeast GLFG nucleoporin.

Prion formation by a yeast GLFG nucleoporin.
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DOI:
10.4161/pri.20199
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发表时间:
2012-09
期刊:
影响因子:
2.3
通讯作者:
Rexach M
Rexach M
中科院分区:
生物学3区
文献类型:
--
作者:
Halfmann R;Wright JR;Alberti S;Lindquist S;Rexach M

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The self-assembly of proteins into higher order structures is both central to normal biology and a dominant force in disease. Certain glutamine/asparagine (Q/N)-rich proteins in the budding yeast Saccharomyces cerevisiae assemble into self-replicating amyloid-like protein polymers, or prions, that act as genetic elements in an entirely protein-based system of inheritance. The nuclear pore complex (NPC) contains multiple Q/N-rich proteins whose self-assembly has also been proposed to underlie structural and functional properties of the NPC. Here we show that an essential sequence feature of these proteins—repeating GLFG motifs—strongly promotes their self-assembly into amyloids with characteristics of prions. Furthermore, we demonstrate that Nup100 can form bona fide prions, thus establishing a previously undiscovered ability of yeast GLFG nucleoporins to adopt this conformational state in vivo.
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