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Initiation of Anaerobic Degradation of p-Cresol by Formation of 4-Hydroxybenzylsuccinate in Desulfobacterium cetonicum

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2001

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Müller, Jochen A.
Kappler, Andreas

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Journal of Bacteriology. 2001, 183(2), pp. 752-757. ISSN 0021-9193. Available under: doi: 10.1128/JB.183.2.752-757.2001

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The anaerobic bacterium Desulfobacterium cetonicum oxidized p-cresol completely to CO2 with sulfate as the electron acceptor. During growth, 4-hydroxybenzylsuccinate accumulated in the medium. This finding indicated that the methyl group of p-cresol is activated by addition to fumarate, analogous to anaerobic toluene, m-xylene, and m-cresol degradation. In cell extracts, the formation of 4-hydroxybenzylsuccinate from p-cresol and fumarate was detected at an initial rate of 0.57 nmol min21 (mg of protein)21. This activity was specific for extracts of p-cresol-grown cells. 4-Hydroxybenzylsuccinate was degraded further to 4-hydroxybenzoylcoenzyme A (CoA), most likely via b-oxidation. 4-Hydroxybenzoyl-CoA was reductively dehydroxylated to benzoyl- CoA. There was no evidence of degradation of p-cresol via methyl group oxidation by p-cresol-methylhydroxylase in this bacterium.

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570 Biowissenschaften, Biologie

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ISO 690MÜLLER, Jochen A., Alexander S. GALUSHKO, Andreas KAPPLER, Bernhard SCHINK, 2001. Initiation of Anaerobic Degradation of p-Cresol by Formation of 4-Hydroxybenzylsuccinate in Desulfobacterium cetonicum. In: Journal of Bacteriology. 2001, 183(2), pp. 752-757. ISSN 0021-9193. Available under: doi: 10.1128/JB.183.2.752-757.2001
BibTex
@article{Muller2001Initi-6745,
  year={2001},
  doi={10.1128/JB.183.2.752-757.2001},
  title={Initiation of Anaerobic Degradation of p-Cresol by Formation of 4-Hydroxybenzylsuccinate in Desulfobacterium cetonicum},
  number={2},
  volume={183},
  issn={0021-9193},
  journal={Journal of Bacteriology},
  pages={752--757},
  author={Müller, Jochen A. and Galushko, Alexander S. and Kappler, Andreas and Schink, Bernhard}
}
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