[Deoxyribonuclease from Corynebacterium diphtheriae: dynamics of synthesis and properties].

Diphtheritic bacteria of PW-8 Massachusetts strain produced into cultural medium only one nucleotidase--endoDNAase. The enzyme was synthesized by the cells during the exponential phase of growth. The DNAase was purified 500-fold and exhibited properties specific to neutral-alkaline DNAases (pH optimum about 7.