ArticlePlant molecular biology1996
Characterization of the potato mitochondrial transcription unit containing 'native' trnS (GCU), trnF (GAA) and trnP (UGG).
Article in Plant molecular biology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 31 citations in OpenAlex.
- Nuclear identity specifies transcriptional initiation in plant mitochondria.Plant molecular biology · 2002Article
- RT-PCR analysis of 5' to 3'-end-ligated mRNAs identifies the extremities of cox2 transcripts in pea mitochondria.Nucleic acids research · 2002Article
- Structure and expression of several bean (Phaseolus vulgaris) nuclear transfer RNA genes: relevance to the process of tRNA import into plant mitochondria.Plant molecular biology · 1998Article
- A conserved core element is functionally important for maize mitochondrial promoter activity in vitro.Nucleic acids research · 1997Article
- The steady-state level of mRNA from the Ogura cytoplasmic male sterility locus in Brassica cybrids is determined post-transcriptionally by its 3' region.The EMBO journal · 1997Article
- A promoter element active in run-off transcription controls the expression of two cistrons of nad and rps genes in Nicotiana sylvestris mitochondria.Nucleic acids research · 1996Article
- RNA editing of larch mitochondrial tRNA(His) precursors is a prerequisite for processing.Nucleic acids research · 1996Article
- A single editing event is a prerequisite for efficient processing of potato mitochondrial phenylalanine tRNA.Molecular and cellular biology · 1996Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In order to identify the sequences promoting the expression of plant mitochondrial tRNA genes, we have characterized the trnS (GCU), trnF (GAA) and trnP (UGG) transcription unit of the potato mitochondrial genome. These three tRNA genes were shown to be co-transcribed as a 1800 nt long primary transcript. The transcription initiation site located 305 to 312 nt upstream of trnS is surrounded by a purine-rich region but does not contain the consensus motif proposed as a promoter element in dicotyledonous plants. Differential labelling of potato mitochondrial RNA with either guanylyltransferase or T4 polynucleotide kinase suggests that this site corresponds to the unique functional region responsible for the transcription of the three tRNA genes. The initiation site recently found upstream of Oenothera mitochondrial trnF does not seem to be used in potato mitochondria, although a very similar sequence is present 317 nt upstream of the corresponding potato gene. Major processing sites were identified at the 3' end of each tRNA gene. Another processing site, surrounded by a double hairpin structure, is located 498 nt downstream of trnP in stretch of 10 A residues. As judged from northern experiments, this region is close to the determination site of this transcription unit.
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