What do the active ingredients in many rattlesnake venoms target to cause paralysis?

Answer

Nicotinic acetylcholine receptors (nAChRs) at nerve-muscle junctions

The active ingredients in many rattlesnake venoms are proteins that attack the nervous system by specifically targeting the nicotinic acetylcholine receptors found at the junctions between nerves and muscles.

What do the active ingredients in many rattlesnake venoms target to cause paralysis?
venomimmunitysnakeRattlesnakeKingsnake