Abstract
The regulation of the pathway responsible for l‐lysine degradation in Pseudomonas putida has been studied. It has been shown that l‐lysine is the actual inducer of the two first enzymes of the pathway, lysine oxygenase and 5‐aminovaleramidase. No important repression of lysine oxygenase by various carbon sources and by intermediates of the lysine degradation pathway has been found. Activation of lysine oxygenase by its substrate, lysine, has been observed. A physiological function for this phenomenom is proposed. Sodium and potassium ions are activators whereas magnesium ion, phosphate and phosphorylated compounds are inhibitors of lysine oxygenase. Citrate also is inhibitory.
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