Autopalmitoylation of TEAD proteins regulates transcriptional output of the Hippo pathway.
Nat Chem Biol
; 12(4): 282-9, 2016 Apr.
Article
en En
| MEDLINE
| ID: mdl-26900866
ABSTRACT
TEA domain (TEAD) transcription factors bind to the coactivators YAP and TAZ and regulate the transcriptional output of the Hippo pathway, playing critical roles in organ size control and tumorigenesis. Protein S-palmitoylation attaches a fatty acid, palmitate, to cysteine residues and regulates protein trafficking, membrane localization and signaling activities. Using activity-based chemical probes, we discovered that human TEADs possess intrinsic palmitoylating enzyme-like activities and undergo autopalmitoylation at evolutionarily conserved cysteine residues under physiological conditions. We determined the crystal structures of lipid-bound TEADs and found that the lipid chain of palmitate inserts into a conserved deep hydrophobic pocket. Strikingly, palmitoylation did not alter TEAD's localization, but it was required for TEAD's binding to YAP and TAZ and was dispensable for its binding to the Vgll4 tumor suppressor. Moreover, palmitoylation-deficient TEAD mutants impaired TAZ-mediated muscle differentiation in vitro and tissue overgrowth mediated by the Drosophila YAP homolog Yorkie in vivo. Our study directly links autopalmitoylation to the transcriptional regulation of the Hippo pathway.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Factores de Transcripción
/
Proteínas Nucleares
/
Transducción de Señal
/
Proteínas Serina-Treonina Quinasas
/
Cisteína
/
Proteínas de Unión al ADN
/
Lipoilación
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Nat Chem Biol
Asunto de la revista:
BIOLOGIA
/
QUIMICA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Estados Unidos