Shows cytolytic activity on many different cells by forming pore in lipid membranes (PubMed:8182052). In vivo, increases heart rate or kills the animal by cardiac arrest. In addition, it binds to heparin with high affinity, interacts with Kv channel-interacting protein 1 (KCNIP1) in a calcium-independent manner, and binds to integrin alpha-V/beta-3 (ITGAV/ITGB3) with moderate affinity. 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 2.85 mg/kg by intravenous injection. Is classified as a P-type cytotoxin, since a proline residue stands at position 30 (Pro-31 in standard classification). Belongs to the snake three-finger toxin family. Short-chain subfamily. Type IA cytotoxin sub-subfamily.