Selection for growth on 3-nitrotoluene by 2-nitrotoluene-utilizing Acidovorax sp. strain JS42 identifies nitroarene dioxygenases with altered specificities.

Abstract excerpt

Acidovorax sp. strain JS42 uses 2-nitrotoluene as a sole source of carbon and energy. The first enzyme of the degradation pathway, 2-nitrotoluene 2,3-dioxygenase, adds both atoms of molecular oxygen to 2-nitrotoluene, forming nitrite and 3-methylcatechol. All three mononitrotoluene isomers serve as substrates for 2-nitrotoluene dioxygenase, but strain JS42 is unable to grow on 3- or 4-nitrotoluene. Using both...

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