Nephila polyamine toxin 8
Nephila polyamine toxin 8 (or NPTX-8) is a type of polyamine toxin found in the venom of the Trichonephila clavata spider. It is a potent inhibitor of ionotropic glutamate receptors, causing paralysis of insects.
Source: Wikipedia — Nephila polyamine toxin 8 (CC BY-SA 4.0)