<unk>  <unk>  is a potent neurotoxin and the best-known paralytic shellfish toxin (PST). Ingestion of<unk>  by humans, usually by consumption of shellfish contaminated by toxic algal blooms, is responsible for the illness known as paralytic shellfish poisoning (PSP). The term<unk>  originates from the genus name of the butter clam (Saxidomus) from which it was first isolated. But the term<unk>  can also refer to the entire suite of more than 50 structurally related neurotoxins (known collectively as<unk> s") produced by protists, algae and cyanobacteria which includes<unk>  itself <unk> , neosaxitoxin (NSTX), gonyautoxins (GTX) and decarbamoylsaxitoxin (dcSTX).<unk>  has a large environmental and economic impact, as its presence in bivalve shellfish such as mussels, clams, oysters and scallops frequently leads to bans on commercial and recreational shellfish harvesting in many temperate coastal waters around the world including the Northeastern and Western United States, Western Europe, East Asia, Australia, New Zealand, and South Africa. In the United States, paralytic shellfish poisoning has occurred in California, Oregon, Washington, Alaska, and New England.
Saxitoxin
Agitoxin
Neurotoxin
Kurtoxin
Psalmotoxin
Dinotoxin
Bungarotoxin
Vanillotoxin