Topoisomerases I and III inhibit R-loop formation to prevent unregulated replication in the chromosomal Ter region of Escherichia coli.

Type 1A topoisomerases (topos) are the only ubiquitous topos. E. coli has two type 1A topos, topo I (topA) and topo III (topB). Topo I relaxes negative supercoiling in part to inhibit R-loop formation. To grow, topA mutants acquire compensatory mutations, base substitutions in gyrA or gyrB (gyrase)...

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Bibliographic Details
Main Authors: Julien Brochu, Émilie Vlachos-Breton, Sarah Sutherland, Makisha Martel, Marc Drolet
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2018-09-01
Series:PLoS Genetics
Online Access:http://europepmc.org/articles/PMC6160223?pdf=render