Probably participates in a plant defense mechanism. Detected in seeds (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 Oak1 (kalata B1) for which the DNA sequence is known.