| Literature DB >> 27128603 |
Abstract
RNA polymerase II (Pol II) pausing at promoter-proximal regions is a highly regulated step in the transcription cycle. Pause release is facilitated by the P-TEFb kinase, which phosphorylates Pol II and negative elongation factors. Recent studies suggest that P-TEFb (as part of the inhibitory 7SK snRNP) is recruited to promoter-proximal regions through interaction with KAP1/TRIM28/TIF1β to facilitate 'on-site' kinase activation and transcription elongation. Here, I discuss features of this model and future challenges to further hone our understanding of transcriptional regulation including Pol II pausing and pause release.Entities:
Keywords: 7SK snRNP; KAP1/TRIM28; P-TEFb; RNA polymerase II; transcription elongation
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Year: 2016 PMID: 27128603 PMCID: PMC4962805 DOI: 10.1080/15476286.2016.1181254
Source DB: PubMed Journal: RNA Biol ISSN: 1547-6286 Impact factor: 4.652