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AEF1/MPR25 is implicated in RNA editing of plastid atpF and mitochondrial nad5, and also promotes atpF splicing in Arabidopsis and rice 下载免费PDF全文
Aaron Yap Peter Kindgren Catherine Colas des Francs‐Small Tomohiko Kazama Sandra K. Tanz Kinya Toriyama Ian Small 《The Plant journal : for cell and molecular biology》2015,81(5):661-669
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Sosso D Mbelo S Vernoud V Gendrot G Dedieu A Chambrier P Dauzat M Heurtevin L Guyon V Takenaka M Rogowsky PM 《The Plant cell》2012,24(2):676-691
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The E domains of pentatricopeptide repeat proteins from different organelles are not functionally equivalent for RNA editing 总被引:1,自引:0,他引:1
Anne‐Laure Chateigner‐Boutin Catherine Colas des Francs‐Small Sota Fujii Kenji Okuda Sandra K. Tanz Ian Small 《The Plant journal : for cell and molecular biology》2013,74(6):935-945
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Emp10 encodes a mitochondrial PPR protein that affects the cis‐splicing of nad2 intron 1 and seed development in maize 下载免费PDF全文
Manjun Cai Shuzhen Li Feng Sun Qin Sun Hailiang Zhao Xuemei Ren Yanxin Zhao Bao‐Cai Tan Zuxin Zhang Fazhan Qiu 《The Plant journal : for cell and molecular biology》2017,91(1):132-144
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Empty pericarp7 encodes a mitochondrial E–subgroup pentatricopeptide repeat protein that is required for ccmFN editing,mitochondrial function and seed development in maize 下载免费PDF全文
Feng Sun Xiaomin Wang Géraldine Bonnard Yun Shen Zhihui Xiu Xiaojie Li Dahai Gao Zhonghang Zhang Bao‐Cai Tan 《The Plant journal : for cell and molecular biology》2015,84(2):283-295
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RNA editing in plant mitochondria and plastids alters specific nucleotides from cytidine (C) to uridine (U) mostly in mRNAs. A number of PLS-class PPR proteins have been characterized as RNA recognition factors for specific RNA editing sites, all containing a C-terminal extension, the E domain, and some an additional DYW domain, named after the characteristic C-terminal amino acid triplet of this domain. Presently the recognition factors for more than 300 mitochondrial editing sites are still unidentified. In order to characterize these missing factors, the recently proposed computational prediction tool could be of use to assign target RNA editing sites to PPR proteins of yet unknown function. Using this target prediction approach we identified the nuclear gene MEF35 (Mitochondrial Editing Factor 35) to be required for RNA editing at three sites in mitochondria of Arabidopsis thaliana. The MEF35 protein contains eleven PPR repeats and E and DYW extensions at the C-terminus. Two T-DNA insertion mutants, one inserted just upstream and the other inside the reading frame encoding the DYW domain, show loss of editing at a site in each of the mRNAs for protein 16 in the large ribosomal subunit (site rpl16-209), for cytochrome b (cob-286) and for subunit 4 of complex I (nad4-1373), respectively. Editing is restored upon introduction of the wild type MEF35 gene in the reading frame mutant. The MEF35 protein interacts in Y2H assays with the mitochondrial MORF1 and MORF8 proteins, mutation of the latter also influences editing at two of the three MEF35 target sites. Homozygous mutant plants develop indistinguishably from wild type plants, although the RPL16 and COB/CYTB proteins are essential and the amino acids encoded after the editing events are conserved in most plant species. These results demonstrate the feasibility of the computational target prediction to screen for target RNA editing sites of E domain containing PLS-class PPR proteins. 相似文献
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T. Kubo M. P. Yamamoto T. Mikami 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2000,100(2):214-220
We have found that a gene coding for NADH dehydrogenase subunit 4L and a presumed gene, orf25, are linked and co-transcribed with each other in sugar beet mitochondria. Ten and twelve C-to-U editing events were observed
in the mRNAs of nad4L and orf25, respectively; the amino-acid sequence specified after editing is better-conserved in comparison with the homologues of other
organisms. It is interesting to note that the translation initiation codon of nad4L is created by editing. The conservation of the nad4L-orf25 linkage was examined by PCR-amplification of the intergenic region. We obtained successful PCR products from five dicots
(spinach, apple, snapdragon, petunia and tobacco) and two monocots (tulip and pineapple), but not in two poaceous plants,
rice and maize. The intergenic region, when present, was found to be well-conserved in its sequence, suggesting a monophyletic
origin of this linkage. Our result, together with previous reports of Arabidopsis and four poaceous species, favour the argument that the nad4L-orf25 linkage is conserved throughout angiosperms except in the Poaceae.
Received: 12 April 1999 / Accepted: 22 June 1999 相似文献