Osmo-Regulation of Bacterial Transcription via Poised RNA Polymerase
نویسندگان
چکیده
منابع مشابه
Regulation of RNA polymerase II transcription.
Transcription initiation plays a central role in the regulation of gene expression. Exciting developments in the last year have furthered our understanding of the interactions between general transcription factors and how these factors respond to modulators of transcription.
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RNA polymerase (pol) III, assisted by the transcription factors TFIIIC and TFIIIB, transcribes small untranslated RNAs, such as tRNAs. In addition to known pol III-transcribed genes, the Saccharomyces cerevisiae genome contains loci (ZOD1, ETC1-8) associated to incomplete pol III transcription complexes (Moqtaderi, Z., and Struhl, K. (2004) Mol. Cell. Biol. 24, 4118-4127). We show that a short ...
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Many developmentally regulated genes contain a poised RNA polymerase II (Pol II) at their promoters under conditions where full-length transcripts are undetectable. It has been proposed that the transcriptional activity of such promoters is regulated at the elongation stage of Pol II transcription. In Drosophila, the heat-shock loci expressing the Hsp70 genes have been used as a model for the r...
متن کاملBacterial RNA polymerase can retain σ70 throughout transcription.
Production of a messenger RNA proceeds through sequential stages of transcription initiation and transcript elongation and termination. During each of these stages, RNA polymerase (RNAP) function is regulated by RNAP-associated protein factors. In bacteria, RNAP-associated σ factors are strictly required for promoter recognition and have historically been regarded as dedicated initiation factor...
متن کاملRegulation of RNA polymerase III transcription by Maf1 protein.
Maf1 was the first protein discovered to regulate polymerase III RNA in yeast and because it is evolutionarily conserved, a Maf1 ortholog also serves to restrain transcription in mouse and human cells. Understanding the mechanism of the regulation has been made possible by recent studies showing that Maf1 is a nuclear/cytoplasmic protein whose subcellular distribution and hence negative regulat...
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ژورنال
عنوان ژورنال: Molecular Cell
سال: 2004
ISSN: 1097-2765
DOI: 10.1016/s1097-2765(04)00202-3