Anaerobic degradation and transformation of p-toluidine by the sulfate-reducing bacterium Desulfobacula toluolica

The ability of the strictly anaerobic sulfate-reducing bacterium Desulfobacula toluolica (strain Tol2) to cometabolically degrade p-toluidine (p-methylaniline) while using toluene as the primary source of carbon and energy has been studied. This organism has been shown to modify and degrade toluidin...

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Bibliographic Details
Published in:Current microbiology 1998-09, Vol.37 (3), p.172-176
Main Authors: RABER, T, GORONTZY, T, KLEINSCHMIDT, M, STEINBACH, K, BLOTEVOGEL, K.-H
Format: Article
Language:English
Subjects:
Bacteria, Anaerobic - growth & development
Bacteria, Anaerobic - metabolism
Bacteriology
Biological and medical sciences
Biology of microorganisms of confirmed or potential industrial interest
Biotechnology
Biphenyl Compounds - metabolism
Chromatography, High Pressure Liquid
Desulfobacula toluolica
Fundamental and applied biological sciences. Psychology
Liquid chromatography
Metabolism. Enzymes
Metabolites
Microbiology
Mission oriented research
Phenylacetates - metabolism
Physiology and metabolism
Sulfate reduction
Sulfates
Time Factors
Tolonium Chloride - metabolism
Toluene
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Summary:The ability of the strictly anaerobic sulfate-reducing bacterium Desulfobacula toluolica (strain Tol2) to cometabolically degrade p-toluidine (p-methylaniline) while using toluene as the primary source of carbon and energy has been studied. This organism has been shown to modify and degrade toluidine in dense cell suspensions when no other source of carbon and energy is added. The metabolism led to the formation of a variety of metabolites. From these metabolites a biphenyl-like compound as well as phenylacetic acid have been identified by means of HPLC/MS techniques. The probable conversion of p-toluidine to p-aminophenylacetic acid and phenylacetic acid as dead end products suggested that this organism initiates p-toluidine degradation by the carboxylation of the methyl group. If this could be validated in further experiments, it would be the first time that a toluidine was carboxylated at the methyl moiety by an anaerobic, sulfate-reducing bacterium.
ISSN:0343-8651
1432-0991
DOI:10.1007/s002849900359