Clostridium perfringens
Some β-PFTs such as clostridial ε-toxin and "Clostridium perfringens" enterotoxin (CPE) bind to the cell membrane via specific receptors – possibly certain claudins for CPE, possibly GPI anchors or other sugars for ε-toxin – these receptors help raise the local concentration of the toxins, allowing oligomerisation and pore formation.