The Chromatin Remodeler ISW1 Is a Quality Control Factor that Surveys Nuclear mRNP Biogenesis.
Cell
; 167(5): 1201-1214.e15, 2016 11 17.
Article
en En
| MEDLINE
| ID: mdl-27863241
Chromatin dynamics play an essential role in regulating DNA transaction processes, but it is unclear whether transcription-associated chromatin modifications control the mRNA ribonucleoparticles (mRNPs) pipeline from synthesis to nuclear exit. Here, we identify the yeast ISW1 chromatin remodeling complex as an unanticipated mRNP nuclear export surveillance factor that retains export-incompetent transcripts near their transcription site. This tethering activity of ISW1 requires chromatin binding and is independent of nucleosome sliding activity or changes in RNA polymerase II processivity. Combination of in vivo UV-crosslinking and genome-wide RNA immunoprecipitation assays show that Isw1 and its cofactors interact directly with premature mRNPs. Our results highlight that the concerted action of Isw1 and the nuclear exosome ensures accurate surveillance mechanism that proofreads the efficiency of mRNA biogenesis.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ribonucleoproteínas
/
Saccharomyces cerevisiae
/
Adenosina Trifosfatasas
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Proteínas de Saccharomyces cerevisiae
/
Proteínas de Unión al ADN
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Cell
Año:
2016
Tipo del documento:
Article
Pais de publicación:
Estados Unidos