Probably participates in a plant defense mechanism (Potential). Binds to and induces leakage in phospholipd membranes, particularly ones containing 1-palmitoyl-2-oleophosphatidylethanolamine (POPE) (PubMed:26322745). In vitro, displays cytotoxicity against cultured cells but no hemolytic activity towards fresh erythrocytes (PubMed:26322745). The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. This is a cyclic peptide. Contains 3 disulfide bonds. Belongs to the cyclotide family. Moebius subfamily. This peptide is cyclic. The start position was chosen by similarity to Oak1 (kalata B1) for which the DNA sequence is known.