Direct interactions between NEDD8 and ubiquitin E2 conjugating enzymes upregulate cullin-based E3 ligase activity.
Nat Struct Mol Biol
; 14(2): 167-8, 2007 Feb.
Article
en En
| MEDLINE
| ID: mdl-17206147
ABSTRACT
Although cullin-1 neddylation is crucial for the activation of SCF ubiquitin E3 ligases, the underlying mechanisms for NEDD8-mediated activation of SCF remain unclear. Here we demonstrate by NMR and mutational studies that NEDD8 binds the ubiquitin E2 (UBC4), but not NEDD8 E2 (UBC12). Our data imply that NEDD8 forms an active platform on the SCF complex for selective recruitment of ubiquitin-charged E2s in collaboration with RBX1, and thereby upregulates the E3 activity.
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Banco de datos:
MEDLINE
Asunto principal:
Ubiquitinas
/
Proteínas de Ciclo Celular
/
Proteínas Ligasas SKP Cullina F-box
/
Proteínas Cullin
Límite:
Humans
Idioma:
En
Año:
2007
Tipo del documento:
Article