Animal peptide toxins (APT) are short proteins that appear in animal venom and are aimed at inflicting harm to the organism on which the venom acts. APTs are extremely varied in terms of function and include ion channel inhibitors (ICIs), phospholipases, protease inhibitors, disintegrins, defensins and other biological groups. Even specific groups of ICIs, which inhibit the same target channels, often vary in sequence and structural fold.1