Diagenode

>>>   Click for Diagenode’s approach to COVID-19

R-Loops Promote Antisense Transcription across the Mammalian Genome


Tan-Wong Sue Mei, Dhir Somdutta, Proudfoot Nick J.

Widespread antisense long noncoding RNA (lncRNA) overlap with many protein-coding genes in mammals and emanate from gene promoter, enhancer, and termination regions. However, their origin and biological purpose remain unclear. We show that these antisense lncRNA can be generated by R-loops that form when nascent transcript invades the DNA duplex behind elongating RNA polymerase II (Pol II). Biochemically, R-loops act as intrinsic Pol II promoters to induce de novo RNA synthesis. Furthermore, their removal across the human genome by RNase H1 overexpression causes the selective reduction of antisense transcription. Consequently, we predict that R-loops act to facilitate the synthesis of many gene proximal antisense lncRNA. Not only are R-loops widely associated with DNA damage and repair, but we now show that they have the capacity to promote de novo transcript synthesis that may have aided the evolution of gene regulation.

Tags
Antibody

Share this article

Published
November, 2019

Source

Products used in this publication

  • ChIP-seq Grade
    C15200002
    TBP Antibody - ChIP-seq Grade

Events

  • DNA methylation workshop: Become an expert at RRBS
    Diagenode
    Oct 1-Oct 31, 2021
  • Dutch Chromatin Meeting
    Radboud UMC, Geert Grooteplein 15, 6525 EZ Nijmegen, The Netherlands, Experience center, route 292 to 307
    Nov 12, 2021
 See all events

News

 See all news


The European Regional Development Fund and Wallonia are investing in your future.

Extension of industrial buildings and new laboratories.



  ABOUT SSL CERTIFICATES

       Site map   |   Contact us   |   Conditions of sales   |   Conditions of purchase   |   Privacy policy   |   Diagenode Diagnostics