Mechanism of action and activity regulation of COP1, a constitutive repressor of photomorphogenesis

Mechanism of action and activity regulation of COP1, a constitutive repressor of photomorphogenesis Protein COP1 (COnstitutive Photomorphogenesis 1) is a key regulator of plant photomorphogenesis. In darkness, COP1 affects expression of more than 20% of Arabidopsis thaliana genes; primarily, this is associated with the involvement of COP1 in proteolysis of light-controlled transcription factors; COP1 suppresses expression of photomorphogenesis genes. Some specific features of regulation permit COP1 to control different stages of plant development. COP1 manifests activity of E3 ubiquitin ligase, and simultaneously it is involved in the regulation of UV-B-responsive gene transcription. This review analyzes modern notions about the mechanisms of COP1 action. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Mechanism of action and activity regulation of COP1, a constitutive repressor of photomorphogenesis

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S102144371202015X
Publisher site
See Article on Publisher Site

Abstract

Protein COP1 (COnstitutive Photomorphogenesis 1) is a key regulator of plant photomorphogenesis. In darkness, COP1 affects expression of more than 20% of Arabidopsis thaliana genes; primarily, this is associated with the involvement of COP1 in proteolysis of light-controlled transcription factors; COP1 suppresses expression of photomorphogenesis genes. Some specific features of regulation permit COP1 to control different stages of plant development. COP1 manifests activity of E3 ubiquitin ligase, and simultaneously it is involved in the regulation of UV-B-responsive gene transcription. This review analyzes modern notions about the mechanisms of COP1 action.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Feb 26, 2012

References

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