The pentatricopeptide repeat MTSF1 protein stabilizes the nad4 mRNA in Arabidopsis mitochondria.
The pentatricopeptide repeat MTSF1 protein stabilizes the nad4 mRNA in Arabidopsis mitochondria.
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五肽重复MTSF1蛋白在拟南芥线粒体中稳定NAD4 mRNA。
DOI:
10.1093/nar/gkt337
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发表时间:
2013-07
影响因子:
14.9
通讯作者:
Mireau H
中科院分区:
文献类型:
--
作者:
Haïli N;Arnal N;Quadrado M;Amiar S;Tcherkez G;Dahan J;Briozzo P;Colas des Francs-Small C;Vrielynck N;Mireau H
Gene expression in plant mitochondria involves a complex collaboration of transcription initiation and termination, as well as subsequent mRNA processing to produce mature mRNAs. In this study, we describe the function of the Arabidopsis mitochondrial stability factor 1 (MTSF1) gene and show that it encodes a pentatricopeptide repeat protein essential for the 3′-processing of mitochondrial nad4 mRNA and its stability. The nad4 mRNA is highly destabilized in Arabidopsis mtsf1 mutant plants, which consequently accumulates low amounts of a truncated form of respiratory complex I. Biochemical and genetic analyses demonstrated that MTSF1 binds with high affinity to the last 20 nucleotides of nad4 mRNA. Our data support a model for MTSF1 functioning in which its association with the last nucleotides of the nad4 3′ untranslated region stabilizes nad4 mRNA. Additionally, strict conservation of the MTSF1-binding sites strongly suggests that the protective function of MTSF1 on nad4 mRNA is conserved in dicots. These results demonstrate that the mRNA stabilization process initially identified in plastids, whereby proteins bound to RNA extremities constitute barriers to exoribonuclease progression occur in plant mitochondria to protect and concomitantly define the 3′ end of mature mitochondrial mRNAs. Our study also reveals that short RNA molecules corresponding to pentatricopeptide repeat-binding sites accumulate also in plant mitochondria.
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DOI:
10.1083/jcb.93.1.97
发表时间:
1982-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
Fujiki Y;Hubbard AL;Fowler S;Lazarow PB
通讯作者:
Lazarow PB
影响因子:
7.2
作者:
Brangeon, J;Sabar, M;De Paepe, R
通讯作者:
De Paepe, R
影响因子:
7.2
作者:
Keren, Ido;Tal, Liat;Ostersetzer-Biran, Oren
通讯作者:
Ostersetzer-Biran, Oren
影响因子:
11.6
作者:
de Longevialle, Andeol Falcon;Meyer, Etienne H.;Small, Ian D.
通讯作者:
Small, Ian D.
影响因子:
7.4
作者:
Jonietz, Christian;Forner, Joachim;Binder, Stefan
通讯作者:
Binder, Stefan