Abstract
Effect of hydrocortisone, NaF, and FeSO4 on ligninolytic and phosphatase activity of the fungus Lentinus (Panus) tigrinus VKM F-3616D was investigated, Hydrocortisone and NaF were shown to inhibit the enzymes of the ligninolytic complex-laccase (EC 1.10.3.2), secretory peroxidase (EC 1.11.1.7), and Mn peroxidase (EC 1.11.1.13). FeSO4 exhibited no significant effect on the activity of these enzymes. Decreased activity of the enzymes of the ligninolytic complex was associatedwith inhibition of the activity and changes in the substrate specificity of phospholipase A2 (EC 3.1.1.4) in the presence of hydrocortisone of NaF. Cultivation of L. tigrinus in the presence of these compounds resulted in higher affinity of this enzyme to saturated fatty acids, while in the control and in the presence of FeSO4 affinity to unsaturated fatty acids was higher.
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