Unknown. Intracranial injection of the peptide into mice does not produce toxic effects (PubMed:26774129). In addition, the pepide does not produce any observable changes to normal or depolarization-induced intracellular calcium levels in mouse dorsal root ganglion cells (PubMed:26774129). Adopts the 'single disulfide-directed beta hairpin' (SDH) fold. The secondary structural features of this peptide are highly resistant to thermal denaturation (PubMed:26774129). In addition, this peptide can be truncated (90-103 DEL) without loss of ordered structure (PubMed:28437072). The cysteine framework is C-C. Pyrrolidone carboxylic acid at position 1 has no significant effect on the structure of contryphan-Vc1. Belongs to the O2 superfamily.