Polyamine transport and role of potE in response to osmotic stress in Escherichia coli

J Bacteriol. 2000 Nov;182(21):6247-9. doi: 10.1128/JB.182.21.6247-6249.2000.

Abstract

When transport of polyamines in Escherichia coli was examined, putrescine excretion was observed under two different physiological conditions: (i) strictly correlated to growth and (ii) following a hyperosmotic shock. Spermidine was not excreted. Characterization of a deletion mutant showed that PotE is not involved in these transport processes.

MeSH terms

  • Antiporters / genetics
  • Antiporters / metabolism*
  • Bacterial Proteins / genetics
  • Bacterial Proteins / metabolism*
  • Escherichia coli / metabolism*
  • Escherichia coli Proteins*
  • Gene Deletion
  • Osmotic Pressure
  • Polyamines / metabolism*
  • Putrescine / metabolism

Substances

  • Antiporters
  • Bacterial Proteins
  • Escherichia coli Proteins
  • Polyamines
  • PotE protein, E coli
  • Putrescine