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 Previous Article

Journal of Bacteriology, December 2002, p. 6746-6749, Vol. 184, No. 23
0021-9193/02/$04.00+0     DOI: 10.1128/JB.184.23.6746-6749.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Low-Temperature-Induced Changes in Composition and Fluidity of Lipopolysaccharides in the Antarctic Psychrotrophic Bacterium Pseudomonas syringae

G. Seshu Kumar,{dagger} M. V. Jagannadham, and M. K. Ray*

Centre for Cellular and Molecular Biology, Hyderabad 500 007, India

Received 13 May 2002/ Accepted 28 August 2002

The Antarctic psychrotrophic bacterium Pseudomonas syringae was more sensitive to polymyxin B at a lower (4°C) temperature of growth than at a higher (22°C) temperature. The amount of hydroxy fatty acids in the lipopolysaccharides (LPS) also increased at the lower temperature. These changes correlated with the increase in fluidity of the hydrophobic phase of lipopolysaccharide aggregates in vitro.

* Corresponding author. Mailing address: Centre for Cellular and Molecular Biology, Uppal Rd., Hyderabad 500 007, India. Phone: 00-91-40-7192512. Fax: 00-91-40-7160591. E-mail: malay{at}www.ccmb.res.in.

{dagger} Present address: Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602-4712.

Journal of Bacteriology, December 2002, p. 6746-6749, Vol. 184, No. 23
0021-9193/02/$04.00+0     DOI: 10.1128/JB.184.23.6746-6749.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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