Phage-related conversion of enterotoxin A, staphylokinase and beta-toxin in Staphylococcus aureus.

The conversion of enterotoxin A, staphylokinase and beta-toxin in Staphylococcus aureus is related with lysogeny stage. Bacteriophages able to convert enterotoxin A were used for lysogenization of the standard NCTC 8325-4 strain. Lysogenic, enterotoxigenic derivatives of this strain were characterized. The conversion of enterotoxin A was obtained in 7 examined derivatives, the conversion of enterotoxin A and staphylokinase at the same time was obtained in one case and the loss of beta hemolysin production ability was observed in all of 8 examined derivatives of the NCTC 8325-4 standard strain.