TATA-less promoters of some Ets-family genes are efficiently repressed by wild-type p53.
Oncogene
; 13(11): 2331-7, 1996 Dec 05.
Article
em En
| MEDLINE
| ID: mdl-8957074
ABSTRACT
p53 has been reported to repress a number of TATA-containing promoters in transient transfection assays. TATA-less promoters are generally believed to be refractive to p53 repression. We report here that the TATA-less promoters of Ets-family genes (Ets-1 and Ets-2) are efficiently repressed by wild-type but not mutant p53 in transient co-transfection assays. Moreover, p53 was immunologically detected in protein complexes formed on oligonucleotides from both the TATA-containing and TATA-less promoters. Our data suggest that p53 is involved in the regulation of the expression of both promoter types, most probably by protein-protein interaction. A model for p53 function in promoter repression is proposed.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas Repressoras
/
Fatores de Transcrição
/
Transativadores
/
Proteína Supressora de Tumor p53
/
TATA Box
/
Proteínas Proto-Oncogênicas
/
Regiões Promotoras Genéticas
/
Proteínas de Ligação a DNA
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Oncogene
Assunto da revista:
BIOLOGIA MOLECULAR
/
NEOPLASIAS
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
França