This peptide has moderate activity on some voltage-gated potassium channels. It reversibly inhibits the Shaker voltage-gated potassium channels (Kv) from drosophila (Kd=2.7 uM) (PubMed:28774677). In addition, it also irreversibly inhibits human Kv1.3/KCNA3 (IC(50)=24 uM) and Kv1.6/KCNA6 (IC(50)=2.7 uM) potassium channels (PubMed:32823677). Expressed by the venom duct. Monoisotopic mass. Does not affect potassium channels from drosophila (Shab, Shaw, and Shal), as well as the human channel Kv10.1/KCNH1/EAG1 (PubMed:28774677). Does not show activity on human Kv1.4/KCNA4 and Kv1.5/KCNA5 (PubMed:32823677). The mature peptide does not contain cysteine residue. Belongs to the FARP (FMRFamide related peptide) family.