Stably-paused genes revealed through inhibition of transcription initiation by the TFIIH inhibitor Triptolide

ABSTRACT: Transcription by RNA Polymerase II (Pol II) in metazoan is regulated in several steps, including preinitiation complex (PIC) formation, initiation, Pol II escape, productive elongation, cotranscriptional RNA-processing and termination. Genome-wide studies have demonstrated that the phenomenon of promoter-bound Pol II pausing is widespread, especially for genes involved in developmental and stimulus-responsive pathways. However, a mechanistic understanding of the paused Pol II states at promoters is limited. For example, at a global level, it’s unclear to what extent the engaged paused Pol II is stably tethered to the promoter or undergoes rapid cycles of initiation and termination. Here we used the small molecule Triptolide (TPL), an XPB/TFIIH inhibitor, to block transcriptional in

ORGANISM(S): Homo sapiens

SUBMITTER: Ali Shilatifard 

PROVIDER: E-GEOD-63314 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress