Dual-function toxin that inhibits both the serine protease trypsin (Kd<30 nM) and voltage-gated potassium channels Kv1.2/KCNA2 (IC(50)=1300 nM). Belongs to the venom Kunitz-type family. Sea anemone type 2 potassium channel toxin subfamily. Opinions are divided on whether Anemonia viridis (Forsskal, 1775) and Anemonia sulcata (Pennant, 1777) are separate species.