A highly conserved protein of unknown function is required by Sinorhizobium meliloti for symbiosis and environmental stress protection

J Bacteriol. 2008 Feb;190(3):1118-23. doi: 10.1128/JB.01521-07. Epub 2007 Nov 30.


We report here the first characterization of the Sinorhizobium meliloti open reading frame SMc01113. The SMc01113 protein is a member of a highly conserved protein family, universal among bacteria. We demonstrate that the SMc01113 gene is absolutely required for S. meliloti symbiosis with alfalfa and also for the protection of the bacterium from a wide range of environmental stresses.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Bacterial Proteins* / chemistry
  • Bacterial Proteins* / genetics
  • Bacterial Proteins* / metabolism
  • Conserved Sequence*
  • Environment
  • Gene Expression Regulation, Bacterial*
  • Heat-Shock Response*
  • Medicago sativa / growth & development
  • Medicago sativa / microbiology*
  • Molecular Sequence Data
  • Open Reading Frames
  • Sinorhizobium meliloti / genetics
  • Sinorhizobium meliloti / metabolism*
  • Sinorhizobium meliloti / physiology
  • Symbiosis*


  • Bacterial Proteins