Probably participates in a plant defense mechanism. Expressed in pedicel, root and stem but not in leaf and fruit (at protein level). The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. This is a cyclic peptide. Belongs to the cyclotide family. Bracelet subfamily. This peptide is cyclic. The start position was chosen by similarity to chassatide C8 for which the DNA sequence is known.