GTP-binding proteins in plants: new members of an old family

Ma, H. (December 1994) GTP-binding proteins in plants: new members of an old family. Plant Mol Biol, 26 (5). pp. 1611-36. ISSN 0167-4412 (Print)

DOI: 10.1007/BF00016493


Regulatory guanine nucleotide-binding proteins (G proteins) have been studied extensively in animal and microbial organisms, and they are divided into the heterotrimeric and the small (monomeric) classes. Heterotrimeric G proteins are known to mediate signal responses in a variety of pathways in animals and simple eukaryotes, while small G proteins perform diverse functions including signal transduction, secretion, and regulation of cytoskeleton. In recent years, biochemical analyses have produced a large amount of information on the presence and possible functions of G proteins in plants. Further, molecular cloning has clearly demonstrated that plants have both heterotrimeric and small G proteins. Although the functions of the plant heterotrimeric G proteins are yet to be determined, expression analysis of an Arabidopsis G alpha protein suggests that it may be involved in the regulation of cell division and differentiation. In contrast to the very few genes cloned thus far that encode heterotrimeric G proteins in plants, a large number of small G proteins have been identified by molecular cloning from various plants. In addition, several plant small G proteins have been shown to be functional homologues of their counterparts in animals and yeasts. Future studies using a number of approaches are likely to yield insights into the role plant G proteins play.

Item Type: Paper
Uncontrolled Keywords: Animals Eukaryotic Cells/physiology GTP-Binding Proteins/classification/genetics/ metabolism Genes, Plant/ genetics Guanosine Triphosphate/metabolism Plant Physiology Plants/genetics Plants, Genetically Modified Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Signal Transduction/genetics/ physiology Yeasts/genetics
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > GTP binding protein
organism description > plant
Communities: CSHL labs
Depositing User: Matt Covey
Date: December 1994
Date Deposited: 26 Aug 2015 19:23
Last Modified: 26 Aug 2015 19:23
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