[Dynamics of accumulation of extracellular proteins of Serratia marcescens and their nuclease activity during cell growth].

Serratia marcescens, strain B-10 M-1, liberates an unspecific endonuclease into the extracellular nutrient solution. Two peaks of the enzyme activity were found in the cultural broth during growth of the cells. The dynamics of accumulation of protein fractions in the cultural broth was studied, and the relative electrophoretic mobility of the enzyme-active part of the proteins was established.