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A trans-splicing model for the expression of the tripartite nad5 gene in wheat and maize mitochondria.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Souza, A. Pereira De Jubier, M. F. Delcher, Evelyne Lancelin, Dominique Lejeune, Bernard |
| Copyright Year | 1991 |
| Abstract | The mitochondrial single-copy gene nad5 of wheat and maize consists of 5 exons located on three widely separated regions of the genome that are independently transcribed. The first region contains exons I and II separated by an atypical group II intron; in the second region is exon III (only 22 bp long), which is flanked upstream by a maturase-related open reading frame (ORF) and exon e of the nad1 gene, and downstream by a previously unidentified ORF (ORF143); in the third region are exons IV and V separated by a group II intron. In maize, this last domain is flanked upstream by the genes rps12, nad3, and tRNA(Ser) and downstream by a chloroplast tRNA(Cys). RNA editing occurs in wheat exons IV and V as C-to-U changes. A detailed analysis of the transcription of the nad5 gene in wheat and maize reveals that the exons are assembled into a 2.4-kb mRNA after two cis-splicing (between exons I and II and exons IV and V) and two trans-splicing events. The trans-splicing process involves the sequences flanking exons II, III, and IV that feature group II introns. A model is proposed for the assembly and maturation of the nad5 transcripts. |
| Starting Page | 8864 |
| Ending Page | 8864 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.plantcell.org/content/3/12/1363.full.pdf |
| Alternate Webpage(s) | http://www.plantcell.org/content/plantcell/3/12/1363.full.pdf |
| PubMed reference number | 1726722v1 |
| Volume Number | 3 |
| Issue Number | 12 |
| Journal | The Plant cell |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Biologic Development Chloroplasts Exons Flank (surface region) Introns Mitochondrial Inheritance Open Reading Frames RNA Editing RNA Splicing Reading Frames (Nucleotide Sequence) Trans-Splicing Transcript |
| Content Type | Text |
| Resource Type | Article |
