In yeast cells arrested at the early S-phase by hydroxyurea, rRNA gene promoters and chromatin are poised for transcription while rRNA synthesis is compromised
Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis(2019)
Abstract
•In early S-phase arrested cells by HU essentially all rRNA genes have an open chromatin.•Only a portion of all open rRNA genes has RNA polymerases I.•rRNA genes remain poised for transcription in cell cycle arrested cells.•rRNA processing and synthesis are compromised in HU treated cells.
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Key words
Chromatin,Hydroxyurea,Chromatin endogenous cleavage,Psoralen crosslinking,rRNA genes,RNA polymerase I
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