Low-affinity blocker of Kv4.2/KCND2 voltage-gated potassium channels. Is presumed to shift the voltage-dependence of channel activation to more depolarized potentials and to bind to the S3-S4 linker region of the voltage sensor domain. Monomer. Expressed by the venom gland. The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Monoisotopic mass. Belongs to the neurotoxin 10 (Hwtx-1) family. 58 subfamily.