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Applied and Environmental Microbiology, June 2007, p. 3752-3754, Vol. 73, No. 11
0099-2240/07/$08.00+0     doi:10.1128/AEM.02549-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Kinetic Constant Variability in Bacterial Oxidation of Elemental Sulfur{triangledown}

Blanka Pokorna, Martin Mandl,* Sarka Borilova, Pavla Ceskova, Romana Markova, and Oldrich Janiczek

Department of Biochemistry, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic

Received 1 November 2006/ Accepted 10 April 2007

Wide ranges of growth yields on sulfur (from 2.4 x 1010 to 8.1 x 1011 cells g–1) and maximum sulfur oxidation rates (from 0.068 to 1.30 mmol liter–1 h–1) of an Acidithiobacillus ferrooxidans strain (CCM 4253) were observed in 73 batch cultures. No significant correlation between the constants was observed. Changes of the Michaelis constant for sulfur (from 0.46 to 15.5 mM) in resting cells were also noted.

* Corresponding author. Mailing address: Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic. Phone: 420 549495728. Fax: 420 549492690. E-mail: mandl{at}chemi.muni.cz

{triangledown} Published ahead of print on 20 April 2007.

Applied and Environmental Microbiology, June 2007, p. 3752-3754, Vol. 73, No. 11
0099-2240/07/$08.00+0     doi:10.1128/AEM.02549-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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