Solution structure of omega-grammotoxin SIA. PDB entry<unk>  is a toxin in the venom of the tarantula Grammostola spatulata. It is a protein toxin that inhibits P-, Q- and N-type voltage-gated calcium channels (Ca 2+ channels) in neurons.<unk>  is also known as omega-grammotoxin SIA.
Grammotoxin
Staphylotoxin
Chlorotoxin
Psalmotoxin
Conotoxin
Hemotoxin
Vanillotoxin
Genitotoxin