This heterodimer has insecticidal and cytotoxic properties (PubMed:33344898). Induces immediate paralysis when injected into blowflies (Lucilia cuprina), and then death within 24 hours (PubMed:33344898). Also inhibits the growth of Aedes albopictus mosquito C6/36 cells (PubMed:33344898). Heterodimer composed of subunit A and subunit B (DELTA-PSDTX-Pp1a); disulfide-linked. Expressed by the venom gland. Heterodimer (A and B chains): PD(50) is 2.5 nmol/g in sheep blowflies (Lucilia cuprina) (at 0.5 hours post-injection). Heterodimer (A and B chains): LD(50) is 3.0 nmol/g by injection into the ventro-lateral thorax of sheep blowflies (Lucilia cuprina). Heterodimer (A and B chains): LD(50) is 1.04 um/ml in Aedes albopictus mosquito C6/36 cells. Electrospray ionization experiments give a mass of 6598.6 Da for DELTA-pseudomyrmecitoxin-Pp1a heterodimer (subunits A+B).