Dynamic interplay of the SUMO and ERK pathways in regulating Elk-1 transcriptional activity.
Mol Cell
; 12(1): 63-74, 2003 Jul.
Article
en En
| MEDLINE
| ID: mdl-12887893
ABSTRACT
The ETS domain transcription factor Elk-1 is a direct target of the MAP kinase pathways. Phosphorylation of the Elk-1 transcriptional activation domain by MAP kinases triggers its activation. However, Elk-1 also contains two domains with repressive activities. One of these, the R motif, appears to function by suppressing the activity of the activation domain. Here, we demonstrate that SUMO modification of the R motif is required for this repressive activity. A dynamic interplay exists between the activating ERK MAP kinase pathway and the repressive SUMO pathway. ERK pathway activation leads to both phosphorylation of Elk-1 and loss of SUMO conjugation and, hence, to the loss of the repressive activity of the R motif. Thus, the reciprocal regulation of the activation and repressive activities are coupled by MAP kinase modification of Elk-1.
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Base de datos:
MEDLINE
Asunto principal:
Proteínas Represoras
/
Factores de Transcripción
/
Transcripción Genética
/
Proteínas Proto-Oncogénicas
/
Proteínas Quinasas Activadas por Mitógenos
/
Proteína SUMO-1
/
Proteínas de Unión al ADN
/
Células Eucariotas
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Mol Cell
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2003
Tipo del documento:
Article
País de afiliación:
Reino Unido