Pol II docking and pausing at growth and stress genes in C. elegans.

Published

Journal Article

Fluctuations in nutrient availability profoundly impact gene expression. Previous work revealed postrecruitment regulation of RNA polymerase II (Pol II) during starvation and recovery in Caenorhabditis elegans, suggesting that promoter-proximal pausing promotes rapid response to feeding. To test this hypothesis, we measured Pol II elongation genome wide by two complementary approaches and analyzed elongation in conjunction with Pol II binding and expression. We confirmed bona fide pausing during starvation and also discovered Pol II docking. Pausing occurs at active stress-response genes that become downregulated in response to feeding. In contrast, "docked" Pol II accumulates without initiating upstream of inactive growth genes that become rapidly upregulated upon feeding. Beyond differences in function and expression, these two sets of genes have different core promoter motifs, suggesting alternative transcriptional machinery. Our work suggests that growth and stress genes are both regulated postrecruitment during starvation but at initiation and elongation, respectively, coordinating gene expression with nutrient availability.

Full Text

Duke Authors

Cited Authors

  • Maxwell, CS; Kruesi, WS; Core, LJ; Kurhanewicz, N; Waters, CT; Lewarch, CL; Antoshechkin, I; Lis, JT; Meyer, BJ; Baugh, LR

Published Date

  • February 2014

Published In

Volume / Issue

  • 6 / 3

Start / End Page

  • 455 - 466

PubMed ID

  • 24485661

Pubmed Central ID

  • 24485661

Electronic International Standard Serial Number (EISSN)

  • 2211-1247

International Standard Serial Number (ISSN)

  • 2211-1247

Digital Object Identifier (DOI)

  • 10.1016/j.celrep.2014.01.008

Language

  • eng