Produces complete blockade of auricular contraction, which is irreversible at high concentrations. Induces apoptosis in leukemic cells. Possesses anti-arthritic and anti-inflammatory potential. Monomer in solution; Homodimer and oligomer in the presence of negatively charged lipids forming a pore with a size ranging between 20 and 30 Angstroms. Expressed by the venom gland. LD(50) is 2.5 mg/kg by intraperitoneal injection into mice. Is classified as a S-type cytotoxin, since a serine residue stands at position 28 (Ser-29 in standard classification). Belongs to the snake three-finger toxin family. Short-chain subfamily. Type IA cytotoxin sub-subfamily.