| Abstract: | By means of chloramphenicol it was found that biosynthesis of alkaline exocellular RNAase was repressed in Bacillus intermedius by inorganic phosphate. Actinomycin D at a low concentration stimulates RNAase biosynthesis in a medium with a minimal phosphorus concentration in model experiments with washed cells and in the batch culture. As a result, the activity of RNAase rises 2-4 times. The stimulating effect of actinomycin D decreases when phosphorus concentration in the medium is increased The effect of actinomycin D is maximal if the antibiotic is added to the medium when the specific growth rate of the bacterium falls down and the rate of RNAase biosynthesis rises. |
