caa a22 4500 46317190X CHVBK 20180406164815.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00344-007-9022-7 doi (NATIONALLICENCE)springer-10.1007/s00344-007-9022-7 Ma Qing-Hu Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China aut Small GTP-binding Proteins and their Functions in Plants [Elektronische Daten] [Qing-Hu Ma] Small GTP-binding proteins exist in eukaryotes from yeast to animals to plants and constitute a superfamily whose members function as molecular switches that cycle between "active” and "inactive” states. They regulate a wide variety of cell functions such as signal transduction, cell proliferation, cytoskeletal organization, intracellular membrane trafficking, and gene expression. In yeast and animals, this superfamily is structurally classified into at least five families: the Ras, Rho, Rab, Arf/Sar1, and Ran families. However, plants contain Rab, Rho, Arf, and Ran homologs, but no Ras. Small GTP-binding proteins have become an intensively studied group of regulators not only in yeast and animals but also in plants in recent years. In this article we briefly review the class and structure of small GTP-binding proteins. Their working modes and functions in animals and yeast are listed, and the functions of individual members of these families in plants are discussed, with the emphasis on the recently revealed plant-specific roles of these proteins, including their cross-talk with plant hormones and other signals, regulation of organogenesis (leaf, root, and embryo), polar growth, cell division, and involvement in various stress and defense responses. Springer Science+Business Media, LLC, 2007 Small GTP-binding proteins nationallicence Plant-specific functions nationallicence Journal of Plant Growth Regulation Springer-Verlag 26/4(2007-12-01), 369-388 0721-7595 26:4<369 2007 26 344 https://doi.org/10.1007/s00344-007-9022-7 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00344-007-9022-7 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ma Qing-Hu Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China aut NATIONALLICENCE 773 0- Journal of Plant Growth Regulation Springer-Verlag 26/4(2007-12-01), 369-388 0721-7595 26:4<369 2007 26 344 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer