Mechanisms of StpA-mediated RNA remodeling

RNA Biol. 2010 Nov-Dec;7(6):735-43. doi: 10.4161/rna.7.6.13882. Epub 2010 Nov 1.

Abstract

In bacteria, transcription, translation and gene regulation are highly coupled processes. The achievement of a certain functional structure at a distinct temporal and spatial position is therefore essential for RNA molecules. Proteins that facilitate this proper folding of RNA molecules are called RNA chaperones. Here a prominent example from E. coli is reviewed: the nucleoid associated protein StpA. Based on its various RNA remodeling functions, we propose a mechanistic model that explains how StpA promotes RNA folding. Through transient interactions via the RNA backbone, thereby shielding repelling charges in RNA, it pre-positions the RNA molecules for the successful formation of transition states from encounter complexes.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • DNA-Binding Proteins / metabolism*
  • Escherichia coli Proteins / metabolism*
  • Models, Biological
  • Molecular Chaperones / chemistry
  • Molecular Chaperones / metabolism*
  • RNA / metabolism*

Substances

  • DNA-Binding Proteins
  • Escherichia coli Proteins
  • Molecular Chaperones
  • StpA protein, E coli
  • RNA