ArticleCurrent genetics1992
Variable intron content of the NADH dehydrogenase subunit 4 gene of plant mitochondria.
Article in Current genetics, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- The complete nucleotide sequence of the mitochondrial genome of sugar beet (Beta vulgaris L.) reveals a novel gene for tRNA(Cys)(GCA).Nucleic acids research · 2000Article
- Nuclear genes associated with a single Brassica CMS restorer locus influence transcripts of three different mitochondrial gene regions.Genetics · 1996Article
- Physical and gene organization of mitochondrial DNA from the fertile cytoplasm of sugarbeet (Beta vulgaris L.).Current genetics · 1995Article
- Deletion of the last two exons of the mitochondrial nad7 gene results in lack of the NAD7 polypeptide in a Nicotiana sylvestris CMS mutant.Molecular & general genetics : MGG · 1995Article
- The NADH dehydrogenase subunit 7 gene is interrupted by four group II introns in the wheat mitochondrial genome.Molecular & general genetics : MGG · 1994Article
- Intron loss from the NADH dehydrogenase subunit 4 gene of lettuce mitochondrial DNA: evidence for homologous recombination of a cDNA intermediate.Molecular & general genetics : MGG · 1994Article
- The nad4 gene of maize mitochondria is highly conserved.Plant physiology · 1994Article
- Cotranscriptional expression of mitochondrial genes for subunits of NADH dehydrogenase, nad5, nad4, nad2, in Marchantia polymorpha.Molecular & general genetics : MGG · 1993Article
- Mitochondrial genes in the colourless alga Prototheca wickerhamii resemble plant genes in their exons but fungal genes in their introns.Nucleic acids research · 1993Article
- Characterization of the Brassica campestris mitochondrial gene for subunit six of NADH dehydrogenase: nad6 is present in the mitochondrion of a wide range of flowering plants.Current genetics · 1993Article
- Large size and complex structure of mitochondrial DNA in two nonflowering land plants.Current genetics · 1992Article
- Article
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3 authors.
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Abstract
The gene nad4, encoding subunit four of the mitochondrial NADH dehydrogenase complex I, has been isolated and characterized from turnip, Brassica campestris. The 8 kb turnip nad4 gene contains four exons, which potentially encode a NAD4 polypeptide of 495 amino acids, and three large group II introns. Northern analysis identifies an abundant 2 kb transcript that most likely serves as the nad4 mRNA, while several larger transcripts (putative splicing intermediates) are also detected. Analysis of the nad4 locus in three distantly related dicotyledons indicates that introns 2 and 3 are optional. Mung bean has the same nad4 organization as turnip, whereas spinach nad4 contains introns 1 and 3, and lettuce nad4 has intron 1 only. We infer that all three group II introns were present in the nad4 gene of an angiosperm common ancestor and have persisted in certain lineages for over 200 million years, with two of the introns having been lost in other lineages.
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