Translations:Calcium channel blocker/26/en
Agatoxin in spider venom
Research on the desert grass spider, Agelenopsis aperta, has shown that agatoxins IVA and IVB found in their venom selectively block calcium channels. These agatoxins are found in other spider species as well. Desert grass spider bites to insects result in rapid paralysis, but bites to humans are not considered medically significant.