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Journal of Bacteriology, November 2000, p. 6247-6249, Vol. 182, No. 21
0021-9193/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Polyamine Transport and Role of potE in Response to Osmotic Stress in Escherichia coli

Dirk Schiller,1 Daniela Kruse,1 Helmut Kneifel,2 Reinhard Krämer,1 and Andreas Burkovski1,*

Institut für Biochemie, Universität Köln, D-50674 Cologne,1 and Forschungszentrum Jülich, ICG6, D-52425 Jülich,2 Germany

Received 7 June 2000/Accepted 15 August 2000

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.

* Corresponding author. Mailing address: Institut für Biochemie, Universität Köln, Zülpicher-Str. 47, D-50674 Cologne, Germany. Phone: 49-221-470-6472. Fax: 49-221-470-5091. E-mail: a.burkovski{at}uni-koeln.de.

Journal of Bacteriology, November 2000, p. 6247-6249, Vol. 182, No. 21
0021-9193/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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