Paper · 2012 · Russian Journal of Plant Physiology

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

O. G. Smirnova; I. L. Stepanenko; V. K. Shumny

4
claims
7
verbatim quotes
13
citations
2
research areas
—
Not open access

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.

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Claims 4

Observationobservedreview summarybasis n/a

Claim · model-written summary

In darkness COP1 affects expression of over 20% of Arabidopsis thaliana genes.

Taxon
Arabidopsis thalianaArabidopsis thalianae0
Gene
COP1e0
Outcome
expression of more than 20% of Arabidopsis thaliana genese0
Value
more than 20%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arabidopsis thaliana
Arabidopsis thaliana · TaxonOriginal uploader was Brona at en.wikipedia . User:Roepers at nl.wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In darkness, COP1 affects expression of more than 20% of Arabidopsis thaliana genes”

✓ located verbatim in the source · abstract, characters 97–180 · show in text ↑
Mechanismauthor interpretationreview summarynegativebasis n/a

Claim · model-written summary

COP1 suppresses photomorphogenesis genes through proteolysis of light-controlled transcription factors.

Taxon
Arabidopsis thalianaArabidopsis thalianae1
Gene
COP1e0
Outcome
expression of photomorphogenesis genese0
Qualifier
proteolysis of light-controlled transcription factorse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arabidopsis thaliana
Arabidopsis thaliana · TaxonOriginal uploader was Brona at en.wikipedia . User:Roepers at nl.wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“involvement of COP1 in proteolysis of light-controlled transcription factors; COP1 suppresses expression of photomorphogenesis genes”

✓ located verbatim in the source · abstract, characters 221–353 · show in text ↑
e1

“Arabidopsis thaliana genes”

✓ located verbatim in the source · abstract, characters 154–180 · show in text ↑
Observationauthor interpretationreview summarybasis n/a

Claim · model-written summary

COP1 regulates different stages of plant development.

Taxon
Arabidopsis thalianaArabidopsis thalianae1
Gene
COP1e0
Outcome
different stages of plant developmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arabidopsis thaliana
Arabidopsis thaliana · TaxonOriginal uploader was Brona at en.wikipedia . User:Roepers at nl.wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“COP1 to control different stages of plant development”

✓ located verbatim in the source · abstract, characters 399–452 · show in text ↑
e1

“Arabidopsis thaliana genes”

✓ located verbatim in the source · abstract, characters 154–180 · show in text ↑
Observationobservedreview summarybasis n/a

Claim · model-written summary

COP1 has E3 ubiquitin ligase activity and regulates UV-B-responsive gene transcription.

Taxon
Arabidopsis thalianaArabidopsis thalianae1
Gene
COP1e0
Outcome
activity of E3 ubiquitin ligasee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arabidopsis thaliana
Arabidopsis thaliana · TaxonOriginal uploader was Brona at en.wikipedia . User:Roepers at nl.wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“COP1 manifests activity of E3 ubiquitin ligase, and simultaneously it is involved in the regulation of UV-B-responsive gene transcription”

✓ located verbatim in the source · abstract, characters 454–591 · show in text ↑
e1

“Arabidopsis thaliana genes”

✓ located verbatim in the source · abstract, characters 154–180 · show in text ↑