Probably participates in a plant defense mechanism. Reduces growth of and increases mortality in larvae of D.saccharalis. Kills cultured SF-9 cells of S.frugiperda probably by disrupting plasma membranes. Has hemolytic activity against human erythrocytes. Has no antibacterial activity against E.coli strain ATCC 8739 and S.aureus strain ATCC 25923. Expressed in leaves, flowers, peduncles and 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.