Degradation of 4-chlorophenol via the meta cleavage pathway by Comamonas testosteronii JH5

Article Abstract:

The biodegradation of 4-chlorophenol in Comamonas testosteroni strain JH5 was shown to take place through a meta cleavage pathway. The strain utilizes 4-chlorophenol as its only source of carbon and energy. The breakdown of 4-chlorophenol is accompanied by the release of chloride. Two metabolites of the meta cleavage pathway are identified in the system. The enzymes responsible for the meta cleavage pathway are identified.

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Growth of syntrophic propionate-oxidizing bacteria with fumarate in the absence of methanogenic bacteria

Article Abstract:

Changes on the propionate oxidation of two different propionate-oxidizing cultures was studied. Methanogenic culture organisms were subjected to carbon-13 nuclear magnetic resonance experiments. Cocultures of sulfidogens and methanogens with Syntrophobacter wolinii were also tested. Results indicate that among syntrophic propionate-oxidizing bacteria, fumarate utilization is uncommon.

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Pathway of propionate oxidation by a syntrophic culture of Smithella propionica and Methanospirillum hungatei

Article Abstract:

Smithella propionica degrades propionate by a completely different pathway than most other organisms. It appears to dismutate the compound to acetate and butyrate followed by beta-oxidation of butyrate to acetate via a six-carbon intermediate.

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