Initial reactions in the biodegradation of 1-chloro-4-nitrobenzene by a newly isolated bacterium, strain LW1

Article Abstract:

Several possibilities were investigated to clarify the initial steps of the degradative pathway in bacterial strain LW1 of the family Comamonadaceae, which uses 1-chloro-4-nitrobenzene as a a sole source of carbon, nitrogen and energy. Results indicated that the initial attack on the nitro group was reductive, given the accumulation of ammonia but not of nitrite in conversion experiments performed with resting cells grown with 1C4NB and the observed 1C4NB reductase activity in LW1 cell extracts. Partial reduction of the nitro group was suggested by the complete conversion of 1C4NB to 2-amino-5-chlorophenol in the absence of oxygen.

Bacteria, Aromatic compounds, Nitrogen compounds

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Degradation of 2,3-diethyl-5-methylpyrazine by a newly discovered bacterium, Mycobacterium sp. strain DM-11

Article Abstract:

A bacterium was isolated from the waste gas treatment plant at a fishmeal processing company on the basis of its capacity to use 2,3-diethyl-5-methylprazine (DM) as a sole carbon and energy source. The strain, designated strain DM-11, grew optimally at 25 degree Celsius and had a doubling time of 29.2 h.

Science & research, Analysis, Nucleotide sequence, Base sequence, Absorption spectra, Properties, Pyridazine

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