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Chloroplast genes encoding subunits of the H+-ATPase complex of Chlamydomonas reinhardtii are rearranged compared to higher plants: sequence of the atpE gene and location of the atpF and atpI genes

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Summary

The chloroplast gene for the epsilon subunit (atpE) of the CF1/CF0 ATPase in the green alga Chlamydomonas reinhardtii has been localized and sequenced. In contrast to higher plants, the atpE gene does not lie at the 3′ end of the beta subunit (atpB) gene in the chloroplast genome of C. reinhardtii, but is located at a position 92 kb away in the other single copy region. The uninterrupted open reading frame for the atpE gene is 423 bp, and the epsilon subunit exhibits 43% derived amino acid homology to that from spinach. Codon usage for the atpE gene follows the restricted pattern seen in other C. reinhardtii chloroplast genes.

The genes for the CF0 subunits I (atpF) and IV (atpI) of the ATPase complex have also been mapped on the chloroplast genome of C. reinhardtii. The six chloroplast ATPase genes in C. reinhardtii are dispersed individually between the two single copy regions of the chloroplast genome, an organization strikingly different from the highly conserved arrangement in two operon-like units seen in chloroplast genomes of higher plants.

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Abbreviations

bp:

base pairs

CF1 :

chloroplast coupling factor 1

CF0 :

chloroplast coupling factor 0

F1 :

coupling factor 1

F0 :

coupling factor 0

kb:

kilobase pairs

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Authors and Affiliations

  1. Department of Zoology, Duke University, 27706, Durham, NC, U.S.A.

    Jeffrey P. Woessner & Nicholas W. Gillham

  2. Department of Botany, Duke University, 27706, Durham, NC, U.S.A.

    John E. Boynton

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  1. Jeffrey P. Woessner
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  2. Nicholas W. Gillham
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  3. John E. Boynton
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Woessner, J.P., Gillham, N.W. & Boynton, J.E. Chloroplast genes encoding subunits of the H+-ATPase complex of Chlamydomonas reinhardtii are rearranged compared to higher plants: sequence of the atpE gene and location of the atpF and atpI genes. Plant Mol Biol 8, 151–158 (1987). https://doi.org/10.1007/BF00025326

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  • DOI: https://doi.org/10.1007/BF00025326

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