Russian Journal of Plant Physiology

, Volume 55, Issue 1, pp 119–129 | Cite as

Superfamily of plant monomeric GTP-binding proteins: 2. Rab proteins are the regulators of vesicles trafficking and plant responses to stresses

  • I. E. Moshkov
  • G. V. NovikovaEmail author


In plants, Rab proteins represent the largest family of monomeric GTP-binding proteins (mG-proteins). As distinct from animal cells comprising 40 subfamilies of Rab proteins, which are the key regulators of intracellular vesicular transport, numerous Rab proteins in Arabidopsis and other plant species could be grouped in only eight subfamilies on the basis of their functional properties. The available data concerning the involvement of these mG-proteins in the control of vesicle trafficking agree generally with the paradigms accepted for other eukaryotes. On the other hand, these proteins play an important role in plant responses to abiotic and biotic factors, indicating specific for plants functions of Rab proteins.

Key words

plants monomeric GTP-binding proteins Rab proteins exocytosis endocytosis biotic and abiotic factors signal transduction 



Golgi apparatus


constitutively active


dominant negative


endoplasmic reticulum


GTPase-activating protein


guanine nucleotide dissociation inhibitor


guanine nucleotide exchange protein


green fluorescent protein


monomeric GTP-binding proteins


plasma membrane


red fluorescent protein


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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  1. 1.Timiryazev Institute of Plant PhysiologyRussian Academy of SciencesMoscowRussia

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