Discussion
True about anthrax toxin are all except:
Answer: D
Correct answer: Inhibits protein synthesis
The anthrax toxin does not inhibit protein synthesis - that is the mechanism of diphtheria toxin and of Pseudomonas exotoxin A, both of which act on elongation factor 2. The other three statements are true: the toxin has three components (protective antigen, oedema factor and lethal factor); oedema factor is an adenylate cyclase and raises intracellular cyclic AMP, producing the characteristic oedema; and the genes for all three lie on the plasmid pXO1.
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