 The alpha toxin has remarkable similarity to toxins produced by other bacteria as well as natural enzymes.There is significant homology with phospholipase C enzymes from "Bacillus cereus", "C. bifermentans", and "Listeria monocytogenes".The C terminal domain shows similarity with non-bacterial enzymes such as pancreatic lipase, soybean lipoxygenase, and synaptotagmin I.