Probable toxin expected to be employed in prey capture and/or defense against predators (based on its abundance in tentacles). Does not show activity on mammalian voltage-gated potassium and sodium channels, and does not induce change in behavior and mortality rates in crustacea (redclaw crayfish) (PubMed:31302115). Shows moderate cytotoxic activity against MCF-7 and MDA-MB-231 breast cancer cell lines (PubMed:31302115). Has only a weak affinity for lipid membranes (PubMed:31302115). Monomer in solution. Highly expressed in the tentacles (PubMed:31302115). Weakly expressed in acrorhagi and mesenteric filaments (PubMed:31302115). May be N-glycosylated at Asn-22. Activity with this modification has not be tested. The 26-Cys-Pro-27 bond exists only in the trans-isomerization. Does not show activity on voltage-gated potassium channels (Kv1.1-Kv1.6, Kv2.1, Kv4.2, and Shaker IR), voltage-gated sodium channels (Nav1.2, Nav1.4, Nav1.5, and Nav1.6), and the insect channel BgNav1.