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
Claim · model-written summary
In darkness COP1 affects expression of over 20% of Arabidopsis thaliana genes.
- Taxon
- Arabidopsis thaliana
Arabidopsis 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.

Verbatim
e0“In darkness, COP1 affects expression of more than 20% of Arabidopsis thaliana genes”
Claim · model-written summary
COP1 suppresses photomorphogenesis genes through proteolysis of light-controlled transcription factors.
- Taxon
- Arabidopsis thaliana
Arabidopsis 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.

Verbatim
e0“involvement of COP1 in proteolysis of light-controlled transcription factors; COP1 suppresses expression of photomorphogenesis genes”
e1“Arabidopsis thaliana genes”
Claim · model-written summary
COP1 regulates different stages of plant development.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Gene
- COP1e0
- Outcome
- different stages of plant developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“COP1 to control different stages of plant development”
e1“Arabidopsis thaliana genes”
Claim · model-written summary
COP1 has E3 ubiquitin ligase activity and regulates UV-B-responsive gene transcription.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Gene
- COP1e0
- Outcome
- activity of E3 ubiquitin ligasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“COP1 manifests activity of E3 ubiquitin ligase, and simultaneously it is involved in the regulation of UV-B-responsive gene transcription”
e1“Arabidopsis thaliana genes”