A lytic enzyme isolated from P. lytica was studied with respect to its effect on pathogenic grampositive and gramnegative organisms. All the grampositive organisms were lyzed by the enzyme to this or that extent. The cells of staphylococci were the most sensitive. The gramnegative organisms were resistant. It was suggested that the lytic enzyme could be used in preparing drugs for treating certain skin diseases caused by pathogenic staphylococci.
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