14-3-3 proteins: eukaryotic regulatory proteins with many functions

14-3-3 proteins: eukaryotic regulatory proteins with many functions The enigmatically named 14-3-3 proteins have been the subject of considerable attention in recent years since they have been implicated in the regulation of diverse physiological processes, in eukaryotes ranging from slime moulds to higher plants. In plants they have roles in the regulation of the plasma membrane H+-ATPase and nitrate reductase, among others. Regulation of target proteins is achieved through binding of 14-3-3 to short, often phosphorylated motifs in the target, resulting either in its activation (e.g. H+-ATPase), inactivation (e.g. nitrate reductase) or translocation (although this function of 14-3-3 proteins has yet to be demonstrated in plants). The native 14-3-3 proteins are homo- or heterodimers and, as each monomer has a binding site, a dimer can potentially bind two targets, promoting their association. Alternatively, target proteins may have more than one 14-3-3-binding site. In this mini review, we present a synthesis of recent results from plant 14-3-3 research and, with reference to known 14-3-3-binding motifs, suggest further subjects for research. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

14-3-3 proteins: eukaryotic regulatory proteins with many functions

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Publisher
Springer Journals
Copyright
Copyright © 1999 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1006211014713
Publisher site
See Article on Publisher Site

Abstract

The enigmatically named 14-3-3 proteins have been the subject of considerable attention in recent years since they have been implicated in the regulation of diverse physiological processes, in eukaryotes ranging from slime moulds to higher plants. In plants they have roles in the regulation of the plasma membrane H+-ATPase and nitrate reductase, among others. Regulation of target proteins is achieved through binding of 14-3-3 to short, often phosphorylated motifs in the target, resulting either in its activation (e.g. H+-ATPase), inactivation (e.g. nitrate reductase) or translocation (although this function of 14-3-3 proteins has yet to be demonstrated in plants). The native 14-3-3 proteins are homo- or heterodimers and, as each monomer has a binding site, a dimer can potentially bind two targets, promoting their association. Alternatively, target proteins may have more than one 14-3-3-binding site. In this mini review, we present a synthesis of recent results from plant 14-3-3 research and, with reference to known 14-3-3-binding motifs, suggest further subjects for research.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 19, 2004

References

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