The heterotrimer blocks the voltage-dependent L-type calcium channels (Cav1/CACNA1) from the heart, and the small conductance calcium-activated potassium channels (KCa2/KCNN) in the chromaffin cells and in the brain. Is very toxic to mice. Heterotrimer composed of this alpha-neurotoxin-like peptide of 8 kDa, a neurotoxic phospholipase of 16 kDa (AC Q7LZG2) and a serine protease inhibitor of 7 kDa (AC B7S4N9) at an approximate stoichiometry of 1:1:4; non-covalently linked. Expressed by the venom gland. LD(50) of the heterotrimer is 50-100 ug/kg to mice. Is composed of 65-68 amino acid residues. Belongs to the snake three-finger toxin family. Long-chain subfamily. Type II alpha-neurotoxin sub-subfamily. Taicatoxin entry