ArticlePlant molecular biology1999
The mat-r open reading frame is transcribed from a non-canonical promoter and contains an internal promoter to co-transcribe exons nad1e and nad5III in wheat mitochondria.
Article in Plant molecular biology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 28 citations in OpenAlex.
- Towards a comprehensive picture of C-to-U RNA editing sites in angiosperm mitochondria.Plant molecular biology · 2018Article
- Non-coding RNA may be associated with cytoplasmic male sterility in Silene vulgaris.Journal of experimental botany · 2017Article
- The Reverse Transcriptase/RNA Maturase Protein MatR Is Required for the Splicing of Various Group II Introns in Brassicaceae Mitochondria.The Plant cell · 2016Article
- Mapping of wheat mitochondrial mRNA termini and comparison with breakpoints in DNA homology among plants.Plant molecular biology · 2012Article
- Article
- Intron RNA editing is essential for splicing in plant mitochondria.Nucleic acids research · 2010Article
- Evaluating evolutionary constraint on the rapidly evolving gene matK using protein composition.Journal of molecular evolution · 2008Article
- Multiple physical forms of excised group II intron RNAs in wheat mitochondria.Nucleic acids research · 2006Article
- Gene expression studies in isolated mitochondria: Solanum tuberosum rps10 is recognized by cognate potato but not by the transcription, splicing and editing machinery of wheat mitochondria.Nucleic acids research · 2005Article
- Lariat formation and a hydrolytic pathway in plant chloroplast group II intron splicing.The EMBO journal · 2002Article
- Gene expression in isolated plant mitochondria: high fidelity of transcription, splicing and editing of a transgene product in electroporated organelles.Nucleic acids research · 2001Article
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Authors and funding
2 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The expression of the mat-r locus (mat-r-nad1e-nad5III) was studied in wheat mitochondria. Transcription initiation sites were mapped by S1 protection, primer extension and capping experiments. Two different transcription initiation sites were found. One, non-canonical promoter of low expression level generates a transcript containing the complete mat-r open reading frame (orf), suggesting that this form is the maturase-reverse transcriptase mRNA. A second transcription initiation site, found within the coding region of the mat-r orf, directs the transcription of an abundant co-transcript containing the carboxy-terminal region of the mat-r orf, exon e of the nad1 gene, exon III of the nad5 gene and their respective trains-introns. The co-transcript promoter carries the consensus motif of plant mitochondrial promoters. Analysis of transcript sequences reveals the presence of editing sites in analogous positions in both nad1e and nad5III trans-introns, suggesting that RNA editing is necessary for the trans-splicing process.
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