Which of the following is known as Panton-Valentine toxin: (A) Leucocidin of Staphylococcus aureus, (B) Alpha toxin of Clostridium perferingens, (C) DNAase of Staphylococcus pyogenes, (D) None of the above
Answer is A. Panton-valentine leucocidin (called PVL) is a two-component toxin, like gamma lysin, being composed of the S and F components. Such bicomponent, membrane-active toxins have been grouped as synergohymenotropic toxins. Ref: Textbook of Ananthanarayan and paniker's; 10th Edition; Pg:204