Flash facts TOXINS AND THEIR ACTION Cholera toxin enters the cell and constitutively activates the Gs protein Shiga toxin (seen in shigellosis) cleaves host cell rRNA (Blocking 60S) Bacillus anthracis toxin directly acts as an adenylate cyclase Diphtheria toxin and exotoxin A of Pseudomonas inactivate elongation factor 2 Bordetella pertussis exotoxin permanently inactivates Gi protein 4.9K viewsedited 05:28