Abstract

Both basal noninduced and induced levels of catechol 1,2-dioxygenase in strains of Pseudomonas putida during glutamate-limited continuous culture have been shown to increase with dissolved oxygen tension over the range investigated (4–80% air saturation). Fluctuating rates of enzyme synthesis were observed following induction by addition of catechol with an initial lag which was greater at low dissolved oxygen tensions. The results indicate that the rates of metabolism of aromatic cmopounds via the ortho pathway may be enhanced if the dissolved oxygen tension is maintained at a high value.

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