Osmotic adaptation by gram-negative bacteria: possible role for periplasmic oligosaccharides.

Academic Article


  • The cyclic (1----2)-beta-D-glucans produced by species of Agrobacterium and Rhizobium resemble the membrane-derived oligosaccharides of Escherichia coli in their periplasmic localization, intermediate size, and (1----2)-beta-D-glucan backbones. The regulation of the biosynthesis of cyclic (1----2)-beta-D-glucan by Agrobacterium tumefaciens is now shown to parallel the osmotic regulation of membrane-derived oligosaccharide biosynthesis in Escherichia coli. This result suggests a general role for periplasmic oligosaccharides in the osmotic adaptation of Gram-negative bacteria as ecologically diverse as enteric and soil bacteria.
  • Authors

  • Miller, KJ
  • Kennedy, EP
  • Reinhold, Vernon
  • Status

    Publication Date

  • January 3, 1986
  • Published In


  • Adaptation, Physiological
  • Glucans
  • Gram-Negative Bacteria
  • Oligosaccharides
  • Osmotic Pressure
  • Water-Electrolyte Balance
  • Digital Object Identifier (doi)

    Pubmed Id

  • 3941890
  • Start Page

  • 48
  • End Page

  • 51
  • Volume

  • 231
  • Issue

  • 4733