MicF: an antisense RNA gene involved in response of Escherichia coli to global stress factors

J Mol Biol. 2001 Oct 12;313(1):1-12. doi: 10.1006/jmbi.2001.5029.


The micF gene is a stress response gene found in Escherichia coli and related bacteria that post-transcriptionally controls expression of the outer membrane porin gene ompF. The micF gene encodes a non-translated 93 nt antisense RNA that binds its target ompF mRNA and regulates ompF expression by inhibiting translation and inducing degradation of the message. In addition, other factors, such as the RNA chaperone protein StpA also play a role in this regulatory system. Expression of micF is controlled by both environmental and internal stress factors. Four transcriptional regulators are known to bind the micF promoter region and activate micF expression. The crystal structure of one these transcriptional activators, Rob, complexed with the micF promoter has been reported. Here, we review new developments in the micF regulatory network.

Publication types

  • Review

MeSH terms

  • Bacterial Proteins / chemistry
  • Bacterial Proteins / metabolism
  • Base Pairing
  • Base Sequence
  • Crystallography, X-Ray
  • DNA-Binding Proteins / chemistry
  • DNA-Binding Proteins / metabolism
  • Escherichia coli / genetics*
  • Escherichia coli Proteins / genetics
  • Escherichia coli Proteins / metabolism
  • Gene Expression Regulation, Bacterial*
  • Genes, Bacterial / genetics*
  • Molecular Chaperones*
  • Mutation / genetics
  • Oxidative Stress
  • Phylogeny
  • Porins / genetics*
  • Promoter Regions, Genetic / genetics
  • Protein Biosynthesis
  • RNA, Antisense / chemistry
  • RNA, Antisense / genetics*
  • RNA, Antisense / metabolism
  • RNA, Bacterial / chemistry
  • RNA, Bacterial / genetics*
  • RNA, Bacterial / metabolism
  • RNA-Binding Proteins / metabolism
  • Trans-Activators / metabolism


  • Bacterial Proteins
  • DNA-Binding Proteins
  • Escherichia coli Proteins
  • Molecular Chaperones
  • OmpF protein
  • Porins
  • RNA, Antisense
  • RNA, Bacterial
  • RNA-Binding Proteins
  • Rob protein, E coli
  • StpA protein, E coli
  • Trans-Activators