The cytochrome oxidase subunit I and subunit III genes in Oenothera mitochondria are transcribed from identical promoter sequences.
Two loci encoding subunit III of the cytochrome oxidase (COX) in Oenothera mitochondria have been identified from a cDNA library of mitochondrial transcripts. A 657-bp sequence block upstream from the open reading frame is also present in the two copies of the COX subunit I gene and is presumably involved in homologous sequence rearrangement. The proximal points of sequence rearrangements are located 3 bp upstream from the COX I and 1139 bp upstream from the COX III initiation codons. The 5'-termini of both COX I and COX III mRNAs have been mapped in this common sequence confining the promoter region for the Oenothera mitochondrial COX I and COX III genes to the homologous sequence block.
Lehrstuhl für Spezielle Botanik der Universität Tübingen, Auf der Morgenstelle 1, D-74 Tübingen, FRG.
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Hiesel
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Schobel
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Schuster
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Brennicke
D000595:Amino Acid Sequence; D001483:Base Sequence; D003576:Electron Transport Complex IV / Q000235:genetics*; D017343:Genes, Plant / Q000235:genetics*; D008928:Mitochondria / Q000201:enzymology / Q000235:genetics*; D008969:Molecular Sequence Data; D031664:Oenothera / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics*
D003576:Electron Transport Complex IV