publication . Other literature type . 2017

NELF‐E is recruited to DNA double‐strand break sites to promote transcriptional repression and repair

Awwad, Samah W; Abu‐Zhayia, Enas R; Guttmann‐Raviv, Noga; Ayoub, Nabieh;
Open Access English
  • Published: 23 Mar 2017
  • Publisher: John Wiley and Sons Inc.
Abstract
Double‐strand breaks (DSBs) trigger rapid and transient transcription pause to prevent collisions between repair and transcription machineries at damage sites. Little is known about the mechanisms that ensure transcriptional block after DNA damage. Here, we reveal a novel role of the negative elongation factor NELF in blocking transcription activity nearby DSBs. We show that NELF‐E and NELF‐A are rapidly recruited to DSB sites. Furthermore, NELF‐E recruitment and its repressive activity are both required for switching off transcription at DSBs. Remarkably, using I‐SceI endonuclease and CRISPR‐Cas9 systems, we observe that NELF‐E is preferentially recruited, in a...
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