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A new family of RhoGEFs activates the Rop molecular switch in plants

Author

Listed:
  • Antje Berken

    (Max Planck Institute of Molecular Physiology)

  • Christoph Thomas

    (Max Planck Institute of Molecular Physiology)

  • Alfred Wittinghofer

    (Max Planck Institute of Molecular Physiology)

Abstract

Plants go it alone Small Ras-related proteins act as molecular switches to regulate pivotal processes in living organisms. In plants, Rop proteins are key regulators, but it is not clear how these switches are turned on as plants lack the common activators known from animal and yeast systems. Now, a novel family of plant proteins that does the equivalent job has been identified. These previously unknown guanine nucleotide exchange factors activate the Rop switch in Arabidopsis. Though the regulatory system of molecular switches is generally conserved between eukaryotic organisms, these new activator proteins are exclusive to plants and may represent a late invention in evolution.

Suggested Citation

  • Antje Berken & Christoph Thomas & Alfred Wittinghofer, 2005. "A new family of RhoGEFs activates the Rop molecular switch in plants," Nature, Nature, vol. 436(7054), pages 1176-1180, August.
    • Handle: RePEc:nat:nature:v:436:y:2005:i:7054:d:10.1038_nature03883
    DOI: 10.1038/nature03883
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