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  • Title: Cytochrome oxidase subunit II gene in mitochondria of Oenothera has no intron.
    Author: Hiesel R, Brennicke A.
    Journal: EMBO J; 1983; 2(12):2173-8. PubMed ID: 16453484.
    Abstract:
    The cytochrome oxidase subunit II gene has been localized in the mitochondrial genome of Oenothera berteriana and the nucleotide sequence has been determined. The coding sequence contains 777 bp and, unlike the corresponding gene in Zea mays, is not interrupted by an intron. No TGA codon is found within the open reading frame. The codon CGG, as in the maize gene, is used in place of tryptophan codons of corresponding genes in other organisms. At position 742 in the Oenothera sequence the TGG of maize is changed into a CGG codon, where Trp is conserved as the amino acid in other organisms. Homologous sequences occur more than once in the mitochondrial genome as several mitochondrial DNA species hybridize with DNA probes of the cytochrome oxidase subunit II gene.
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