MCCARTY M
J Exp Med. 1952 Dec;96(6):555-68. doi: 10.1084/jem.96.6.555.
The lysis of group A hemolytic streptococci by extracellular enzymes of Streptomyces albus has been studied. The most favorable material for fractionation of the lytic enzymes was obtained by surface growth on shallow layers of liquid medium containing an acid hydrolysate of casein, glucose, and salts. The results of fractionation experiments show that the potent proetolytic enzyme of Streptomyces albus is not able to lyse group A streptococci, and that the initiation of lysis is dependent upon the action of a second, non-proteolytic enzyme. The nature of the non-proteolytic enzyme has not been determined. It does not appear to be a ribonuclease or a lysozyme-like enzyme.
对白色链霉菌胞外酶裂解A组溶血性链球菌进行了研究。通过在含有酪蛋白酸水解物、葡萄糖和盐的液体培养基浅层上进行表面生长,获得了用于裂解酶分级分离的最适宜材料。分级分离实验结果表明,白色链霉菌的强效蛋白水解酶不能裂解A组链球菌,且裂解的起始取决于第二种非蛋白水解酶的作用。尚未确定该非蛋白水解酶的性质。它似乎不是核糖核酸酶或类溶菌酶。