Nuclearly-encoded CBP1 interacts with the 5′ end of mitochondrial cytochrome b pre-mRNA (original) (raw)

Summary

CBP1 is a nuclearly-encoded protein that is imported into mitochondria and confers stability on the mRNA for cytochrome b. Previous work has shown that CBP1 interacts with the cytochrome b transcript upstream of the coding sequence; a region encompassing some 1,100 nucleotides. The work presented here narrows the site of action of CBP1 to the distal third of this upstream sequence through analysis of mRNA produced from a novel recombinant gene containing segments of the gene for cytochrome b, cob, and the ATP synthase subunit 9 gene, olil. In a wild-type CBP1 strain, the cob-olil-cob gene produces stable, mature mRNA that is translated and contributes a portion of the cytochrome b necessary for optimal growth on non-fermentable medium.

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Authors and Affiliations

  1. Department of Biochemistry, University of Arizona, Biosciences West 345, 85721, Tucson, AZ, USA
    Carol L. Dieckmann
  2. Department of Molecular and Cellular Biology, University of Arizona, Biosciences West 350, 85721, Tucson, AZ, USA
    Carol L. Dieckmann & Telsa M. Mittelmeier

Authors

  1. Carol L. Dieckmann
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  2. Telsa M. Mittelmeier
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Dieckmann, C.L., Mittelmeier, T.M. Nuclearly-encoded CBP1 interacts with the 5′ end of mitochondrial cytochrome b pre-mRNA.Curr Genet 12, 391–397 (1987). https://doi.org/10.1007/BF00434815

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