Binding of the transcription factor Atf1 to promoters serves as a barrier to phase nucleosome arrays and avoid cryptic transcription.
Nucleic Acids Res
; 42(16): 10351-9, 2014.
Article
em En
| MEDLINE
| ID: mdl-25122751
ABSTRACT
Schizosaccharomyces pombe displays a large transcriptional response common to several stress conditions, regulated primarily by the transcription factor Atf1. Atf1-dependent promoters contain especially broad nucleosome depleted regions (NDRs) prior to stress imposition. We show here that basal binding of Atf1 to these promoters competes with histones to create wider NDRs at stress genes. Moreover, deletion of atf1 results in nucleosome disorganization specifically at stress coding regions and derepresses antisense transcription. Our data indicate that the transcription factor binding to promoters acts as an effective barrier to fix the +1 nucleosome and phase downstream nucleosome arrays to prevent cryptic transcription.
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Base de dados:
MEDLINE
Assunto principal:
Fosfoproteínas
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Transcrição Gênica
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Nucleossomos
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Regiões Promotoras Genéticas
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Proteínas de Schizosaccharomyces pombe
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Fator 1 Ativador da Transcrição
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article