Upon intracranial injection in mice, as25a (the toxin without the two 4-hydroxyprolines) provokes paralysis of the hind limbs and death with a dose of 240 pmol. Expressed by the venom duct. The cysteine framework is XXV (C-C-C-C-CC). The name as25b given in PubMed:23474143 corresponds to the hydroxylated peptide (PubMed:23474143). The amidation of the C-terminus of this hydroxylated peptide is not directly confirmed (PubMed:23474143). Contains 3 disulfide bonds. Monoisotopic mass.