Shows cytolytic activity on many different cells by forming pores in lipid membranes (By similarity). Exhibits concentration-dependent growth inhibitory effects in the lung cell lines A549 (IC(50)= 0.88) and NL20 (IC(50)= 1.91), in the prostate cell lines PC-3 (IC(50)= 3.13 ug/ml) and RWPE-1 (IC(50)=0.35 ug/ml), and in the breast cell lines MCF-7 (IC(50)= 9.10 ug/ml) and 184B5 (IC(50)=6.21 ug/ml), with high selectivity for the lung cancer cell line A549 (selectivity index=2.17) (PubMed:33263003). Induces primarily necrosis in the A549 lung cancer cell line, and mainly caspase-independent late apoptosis in the breast cancer cells line MCF-7 and in the prostate cancer cell line PC-3 (PubMed:33263003). 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. Exhibits anticancer properties by inhibiting growth in the A549 lung cancer cell line with high selectivity by inducing necrosis, but not in prostate (PC-3) and breast (MCF-7) cancer cell lines. Is classified as a P-type cytotoxin, since a proline residue stands at position 51 (Pro-31 in standard classification). Belongs to the snake three-finger toxin family. Short-chain subfamily. Type IA cytotoxin sub-subfamily.