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Degradation of Substituted Thiophenes by Bacteria Isolated From Activated Sludge

Degradation of Substituted Thiophenes by Bacteria Isolated From Activated Sludge

T Kanagawa, D P Kelly

Microb Ecol. 1987 Jan;13(1):47-57.

PMID: 24213102

Abstract:

Actinomycetes were isolated from activated sludge acclimated to thiophene-2-carboxylic acid (T2C) or 5-methyl-thiophene-2-carboxylic acid (T5M2C). These isolates were apparently identical and were identified as strains ofRhodococcus. The strains could grow on T2C, T5M2C, or thiophene-2-acetic acid as sole sources of carbon and energy, but could not use thiophene, methyl thiophenes, several other substituted thiophenes, dibenzothiophene, dimethyl sulfide, or pyrrole-2-carboxylic acid. T2C was degraded quantitatively to sulfate, and its carbon was converted almost entirely to cell biomass and carbon dioxide. Growth yields indicated about 25% conversion of T2C-carbon to cell-carbon. Growth was not supported by thiosulfate or methionine, nor were these compounds oxidized.Rhodococcus strain TTD-1 grown on T2C oxidized both T2C and T5M2C with an apparent Km of 1.3×10(-5) M. Sulfide was also oxidized by T2C-grown organisms. This is the first demonstration of an actinomycete capable of the complete degradation of thiophene derivatives and of their use by it as sole substrates for growth.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS7931227	Thiophene-2-carboxylic acid methyl ester-5-boric acid			Price

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