Angiomotin family proteins are novel activators of the LATS2 kinase tumor suppressor.
Mol Biol Cell
; 22(19): 3725-33, 2011 Oct.
Article
en En
| MEDLINE
| ID: mdl-21832154
LATS2 kinase functions as part of the Hippo pathway to promote contact inhibition of growth and tumor suppression by phosphorylating and inhibiting the transcriptional coactivator YAP. LATS2 is activated by the MST2 kinase. How LATS2 is activated by MST2 in response to changes in cell density is unknown. Here we identify the angiomotin-family tight junction protein AMOTL2 as a novel activator of LATS2. Like AMOTL2, the other angiomotin-family proteins AMOT and AMOTL1 also activate LATS2 through a novel conserved domain that binds and activates LATS2. AMOTL2 binds MST2, LATS2, and YAP, suggesting that AMOTL2 might serve as a scaffold protein. We show that LATS2, AMOTL2, and YAP all localize to tight junctions, raising the possibility that clustering of Hippo pathway components at tight junctions might function to trigger LATS2 activation and growth inhibition in response to increased cell density.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fosfoproteínas
/
Proteínas Portadoras
/
Proteínas Serina-Treonina Quinasas
/
Proteínas Supresoras de Tumor
/
Péptidos y Proteínas de Señalización Intercelular
/
Proteínas Adaptadoras Transductoras de Señales
/
Proteínas de la Membrana
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Mol Biol Cell
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2011
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos