RNA function. Ribosome stalling induced by mutation of a CNS-specific tRNA causes neurodegeneration.
RNA function. Ribosome stalling induced by mutation of a CNS-specific tRNA causes neurodegeneration.
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DOI:
10.1126/science.1249749
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发表时间:
2014-07-25
期刊:
影响因子:
--
通讯作者:
Ackerman SL
中科院分区:
文献类型:
--
作者:
Ishimura R;Nagy G;Dotu I;Zhou H;Yang XL;Schimmel P;Senju S;Nishimura Y;Chuang JH;Ackerman SL
In higher eukaryotes, tRNAs with the same anticodon are encoded by multiple nuclear genes and little is known about how mutations in these genes affect translation and cellular homeostasis. Similarly, the surveillance systems that respond to such defects in higher eukaryotes are not clear. Here, we discover that loss of GTPBP2, a novel binding partner of the ribosome recycling protein Pelota, in mice with a mutation in a tRNA gene that is specifically expressed in the central nervous system causes ribosome stalling and widespread neurodegeneration. Our results not only define GTPBP2 as a ribosome rescue factor, but also unmask the disease potential of mutations in nuclear-encoded tRNA genes.
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