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Applied and Environmental Microbiology, March 2003, p. 1866-1870, Vol. 69, No. 3
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.3.1866-1870.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Anaerobic Mineralization of Quaternary Carbon Atoms: Isolation of Denitrifying Bacteria on Pivalic Acid (2,2-Dimethylpropionic Acid)

Christina Probian, Annika Wülfing, and Jens Harder*

Department of Microbiology, Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany

Received 22 August 2002/ Accepted 26 November 2002

The degradability of pivalic acid was established by the isolation of several facultative denitrifying strains belonging to Zoogloea resiniphila, to Thauera and Herbaspirillum, and to Comamonadaceae, related to [Aquaspirillum] and Acidovorax, and of a nitrate-reducing bacterium affiliated with Moraxella osloensis. Pivalic acid was completely mineralized to carbon dioxide. The catabolic pathways may involve an oxidation to dimethylmalonate or a carbon skeleton rearrangement, a putative 2,2-dimethylpropionyl coenzyme A mutase.

* Corresponding author. Mailing address: Abteilung Mikrobiologie, Max-Planck-Institut für Marine Mikrobiologie, Celsiusstr. 1, D-28359 Bremen, Germany. Phone: 49-421-2028-750. Fax: 49-421-2028-580. E-mail: jharder{at}mpi-bremen.de.

Applied and Environmental Microbiology, March 2003, p. 1866-1870, Vol. 69, No. 3
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.3.1866-1870.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.





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