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Comamonas strain CNB-1 was isolated from a biological reactor treating wastewater from a p-chloronitrobenzene production factory. Strain CNB-1 used p-chloronitrobenzene as sole source of carbon, nitrogen, and energy. A 2-aminophenol 1,6-dioxygenase was purified from cells of strain CNB-1. The purified 2-aminophenol 1,6-dioxygenase had a native molecular mass of 130 kDa and was composed of α- and...
The sulfur oxygenase/reductase (SOR) of Acidianus strain S5 was purified and characterized after expressing the SOR gene in a recombinant strain of Escherichia coli. The N-terminal sequence of the purified SOR protein was the same as the deduced amino acid sequence from previously cloned SOR genes. Enzymatic studies indicated that the SOR catalyzed the conversion of elemental sulfur (So) to sulfite,...
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