Nucleosomal Barrier to Transcription: Structural Determinants and Changes in Chromatin Structure.
Biochem Mol Biol J
; 2(2)2016.
Article
em En
| MEDLINE
| ID: mdl-27754494
ABSTRACT
Packaging of DNA into chromatin affects all processes on DNA. Nucleosomes present a strong barrier to transcription, raising important questions about the nature and the mechanisms of overcoming the barrier. Recently it was shown that DNA sequence, DNA-histone interactions and backtracking by RNA polymerase II (Pol II) all contribute to formation of the barrier. After partial uncoiling of nucleosomal DNA from histone octamer by Pol II and backtracking of the enzyme, nucleosomal DNA recoils on the octamer, locking Pol II in the arrested state. Histone chaperones and transcription factors TFIIS, TFIIF and FACT facilitate transcription through chromatin using different molecular mechanisms.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Biochem Mol Biol J
Ano de publicação:
2016
Tipo de documento:
Article