Mutation of glutamic acid 103 of toluene o-xylene monooxygenase as a means to control the catabolic efficiency of a recombinant upper pathway for degradation of methylated aromatic compounds.

Abstract excerpt

Toluene o-xylene monooxygenase (ToMO) and phenol hydroxylase (PH) of Pseudomonas stutzeri OX1 act sequentially in a recombinant upper pathway for the degradation of aromatic hydrocarbons. The catalytic efficiency and regioselectivity of these enzymes optimize the degradation of growth substrates like toluene and o-xylene. For example, the sequential monooxygenation of o-xylene by ToMO and PH leads to almost...

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