1) Ion channel toxin 
Discrepin (α-KTx15.6) is a peptide from the venom of the Venezuelan scorpion Tityus discrepans. It acts as a neurotoxin by irreversibly blocking A-type voltage-dependent K+-channels. ==Etymology and source== Discrepin is named after its source: a Venezuelan scorpion called Tityus discrepans. Its systematic number is α-KTx15.6. ==Chemistry== The ...