What are AB toxins? How do they work?
Intracellular-acting extratoxin that is released from the pathogen. The B subunit binds to the target host receptor and induces AB endocytosis into the host cell. Upon entering the cytosol, the A subnit is released into the cytosol to find its target, and modify the target's activity (ribosome, transport mechanisms, intracellular signaling)