[Effect of regulators on bacterial autolysis].

The aim of this work was to study the effect of autolysis regulators (the fraction of microbial teichoic acids) on the rate of autolysis and the activity of bacterial extracellular lytic enzymes. The regulators of autolysis isolated from 23 cultures belonging to 10 microbial species regulated the rate of autolysis in Bacillus, E. coli and Streptococcus lactis.

[Isolation and characterization of the lytic enzyme from Bacillus subtilis 797].

The isolation procedure and some properties of the lytic enzyme produced by Bacillus subtilis 797 and capable of hydrolyzing the E. coli K-12 cells are described. Using hydrophobic chromatography on DNP-hexamethylene diamine Sepharose 4B and ion-exchange chromatography on DEAE-cellulose, a highly purified enzyme preparation with mol.