Reference: Singh N, et al. (2022) Transcription by RNA polymerase II and the CTD-chromatin crosstalk. Biochem Biophys Res Commun 599:81-86

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Abstract


The epigenetic phenomenon is known to derive the phenotypic variation of an organism through an interconnected cellular network of histone modifications, DNA methylation and RNA regulatory network. Transcription for protein coding genes is a highly regulated process and carried out by a large multi-complex RNA Polymerase II. The carboxy terminal domain (CTD) of the largest subunit of RNA Polymerase II consists of a conserved and highly repetitive heptad sequence Tyr1-Ser2-Pro3-Thr4-Ser5-Pro6-Ser7. The epigenetically modified CTD is thought to selectively bind different protein complexes that participate in mRNA biogenesis and export. The CTD and chromatin appears to have a spatial relationship during the transcription cycle, where the epigenetic modifications of CTD not only influence the state of histone modification but also mediates CTD-chromatin crosstalk. In this mini review, we have surveyed and discussed current developments of RNA Polymerase II CTD and its new emerging crosstalk with chromatin, during the stage specific progression of RNA Polymerase II in transcription cycle. This review is mainly focussed on the insights in budding yeast.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't | Review
Authors
Singh N, Asalam M, Ansari MO, Gerasimova NS, Studitsky VM, Akhtar MS
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