Interactions of the COP9 signalosome with the E3 ubiquitin ligase SCFTIRI in mediating auxin response.
Science
; 292(5520): 1379-82, 2001 May 18.
Article
en En
| MEDLINE
| ID: mdl-11337587
ABSTRACT
The COP9 signalosome is an evolutionary conserved multiprotein complex of unknown function that acts as a negative regulator of photomorphogenic seedling development in Arabidopsis. Here, we show that plants with reduced COP9 signalosome levels had decreased auxin response similar to loss-of-function mutants of the E3 ubiquitin ligase SCFTIR1. Furthermore, we found that the COP9 signalosome and SCFTIR1 interacted in vivo and that the COP9 signalosome was required for efficient degradation of PSIAA6, a candidate substrate of SCFTIR1. Thus, the COP9 signalosome may play an important role in mediating E3 ubiquitin ligase-mediated responses.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
/
Proteínas
/
Arabidopsis
/
Ácidos Indolacéticos
/
Ligasas
Idioma:
En
Revista:
Science
Año:
2001
Tipo del documento:
Article