A His-to-Asp phosphorelay modifies the activity of ARR4 on phytochrome signaling.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F02%3A00006184" target="_blank" >RIV/00216224:14310/02:00006184 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

A His-to-Asp phosphorelay modifies the activity of ARR4 on phytochrome signaling.

Original language description

The Arabidopsis thaliana response regulator 4 (ARR4), expressed in response to phytochrome B (phyB) action, specifically interacts with the extreme N-terminus of the photoreceptor. ARR4 stabilizes the active Pfr form of phyB in yeast and in planta, thuselevates the level of the active photoreceptor in vivo. Accordingly, transgenic Arabidopsis plants overexpressing ARR4 display hypersensitivity to red light but not to light of other wavelengths. We therefore propose that ARR4 acts as an output element of a two-component system that modulates red light signaling on the level of the phyB photoreceptor. The two-component system is a signal transduction mechanism that requires a His-to-Asp phosphorelay to modulate the activity of a response regulator (e.g.ARR4). Consequently, we generated transgenic Arabidopsis lines expressing a non-phosphorylable form of ARR4 (ARR4D95N). These lines show hyposensitivity to light observed also for an ARR4 loss-of-function mutant. These results suggest th

Czech name

A His-to-Asp phosphorelay modifies the activity of ARR4 on phytochrome signaling.

Czech description

The Arabidopsis thaliana response regulator 4 (ARR4), expressed in response to phytochrome B (phyB) action, specifically interacts with the extreme N-terminus of the photoreceptor. ARR4 stabilizes the active Pfr form of phyB in yeast and in planta, thuselevates the level of the active photoreceptor in vivo. Accordingly, transgenic Arabidopsis plants overexpressing ARR4 display hypersensitivity to red light but not to light of other wavelengths. We therefore propose that ARR4 acts as an output element of a two-component system that modulates red light signaling on the level of the phyB photoreceptor. The two-component system is a signal transduction mechanism that requires a His-to-Asp phosphorelay to modulate the activity of a response regulator (e.g.ARR4). Consequently, we generated transgenic Arabidopsis lines expressing a non-phosphorylable form of ARR4 (ARR4D95N). These lines show hyposensitivity to light observed also for an ARR4 loss-of-function mutant. These results suggest th

Type

D - Article in proceedings

CEP classification

EB - Genetics and molecular biology

OECD FORD branch

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Project

<a href="/en/project/GA204%2F99%2FD024" target="_blank" >GA204/99/D024: The role of nitrate-inducible bacterial response regulator homologs in Arabidopsis thaliana</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2002

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

XIII International Conference on Arabidopsis Research

ISBN

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ISSN

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e-ISSN

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Number of pages

1

Pages from-to

421

Publisher name

CSIC, Madrid

Place of publication

Sevilla, Spain

Event location

Seville, June 28 - July 2, 2002

Event date

Jan 1, 2002

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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