Current Genetics

, Volume 20, Issue 1–2, pp 173–175 | Cite as

Sequences of two rbcS cDNA clones of Batophora oerstedii: structural and evolutionary considerations

  • Sigrid U. Schneider
  • Egon J. de Groot
Short Communications


Two cDNA clones for the small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (SSU) of Batophora oerstedii were isolated and sequenced. One clone contains the coding information for the complete SSU precursor protein. As in two other species of Dasycladaceae (Acetabularia mediterranea and A. cliftonii), the rbcS cDNA sequences of B. oerstedii display the codons TAA or TAG, which seem to code for glutamine, in the reading frame. The amino acid substitution rate for the SSU protein was calculated to be 0.35–0.41 amino acids per 109 years per site based on the substitutions observed in the SSU amino acid sequences of Acetabularia and Batophora.

Key words

Batophora Small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (SSU) rbcS cDNA sequence Evolution 


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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Sigrid U. Schneider
    • 1
  • Egon J. de Groot
    • 1
  1. 1.Max-Planck-Institut für Zellbiologie, RosenhofLadenburg bei HeidelbergFederal Republic of Germany

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