[Regulation of biosynthesis of intracellular enzymes in Bacillus intermedius 3S-19]

The addition of microelements (Co2+, Cu2+, Zn2+, and Fe2+) to a cultivation medium increased the activity of phosphomonoesterase but not of proteinase and ribonuclease. Glucose and inorganic phosphate (Pi) were the main factors that affected the direction and intensity of the biosynthesis of extracellular enzymes.