Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/40096
COMPARTIR / EXPORTAR:
logo share SHARE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Phage phi 29 regulatory protein p4 stabilizes the binding of the RNA polymerase to the late promoter in a process involving direct protein-protein contacts

AutorNuez, Beatriz; Rojo, Fernando CSIC ORCID ; Salas, Margarita CSIC ORCID
Fecha de publicación1-dic-1992
EditorNational Academy of Sciences (U.S.)
CitaciónProceedings of the National Academy of Sciences of the USA 89 (23) 11401-11405 (1992)
ResumenTranscription from the late promoter, PA3, of Bacillus subtilis phage phi 29 is activated by the viral regulatory protein p4. A kinetic analysis of the activation process has revealed that the role of protein p4 is to stabilize the binding of RNA polymerase to the promoter as a closed complex without significantly affecting further steps of the initiation process. Electrophoretic band-shift assays performed with a DNA fragment spanning only the protein p4 binding site showed that RNA polymerase could efficiently retard the complex formed by protein p4 bound to the DNA. Similarly, when a DNA fragment containing only the RNA polymerase-binding region of PA3 was used, p4 greatly stimulated the binding of RNA polymerase to the DNA. These results strongly suggest that p4 and RNA polymerase contact each other at the PA3 promoter. In the light of current knowledge of the p4 activation mechanism, we propose that direct contacts between the two proteins participate in the activation process.
Versión del editorhttp://www.pnas.org/content/89/23/11401.short
URIhttp://hdl.handle.net/10261/40096
ISSN1091-6490
Aparece en las colecciones: (CBM) Artículos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
PNAS-1992-Nuez-11401-5.pdf1,41 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

Page view(s)

281
checked on 18-mar-2024

Download(s)

332
checked on 18-mar-2024

Google ScholarTM

Check


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.