Pseudomonas exotoxin inhibits protein synthesis by inhibiting ?: (A) RNA polymerase, (B) EF-2, (C) Transpeptidase, (D) Reverse transcriptase
Answer is B. Ans. is 'b' i.e., EF-2 Exotoxin 'A' of P. aeruginosa inhibits protein synthesis through interference with adenosine diphosphate ribosylation of elongation factor - 2. Remember Bacterial toxins inhibiting protein synthesis : Exotoxin A of P aeruginosa Shiga toxin (Shigella) Diphtheria toxin Shiga like toxin or verocytotoxin of EHEC.