Conserved structures of mediator and RNA polymerase II holoenzyme.
Science
; 283(5404): 985-7, 1999 Feb 12.
Article
en En
| MEDLINE
| ID: mdl-9974391
Single particles of the mediator of transcriptional regulation (Mediator) and of RNA polymerase II holoenzyme were revealed by electron microscopy and image processing. Mediator alone appeared compact, but at high pH or in the presence of RNA polymerase II it displayed an extended conformation. Holoenzyme contained Mediator in a fully extended state, partially enveloping the globular polymerase, with points of apparent contact in the vicinity of the polymerase carboxyl-terminal domain and the DNA-binding channel. A similarity in appearance and conformational behavior of yeast and murine complexes indicates a conservation of Mediator structure among eukaryotes.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Conformación Proteica
/
Factores de Transcripción
/
ARN Polimerasas Dirigidas por ADN
/
Proteínas Fúngicas
/
Transactivadores
Límite:
Animals
Idioma:
En
Revista:
Science
Año:
1999
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos