Probably participates in a plant defense mechanism (By similarity). Does not display any cytotoxic activity towards K562, HeLa, MCF-7, HUVEC or red blood cells (PubMed:32414842). Does not bind to phospholipd membranes containing 1-palmitoyl 2-oleoyl phosphatidylcholine (POPC) or 1-palmitoyl-2-oleophosphatidylethanolamine (POPE) (PubMed:32414842). Detected in stems (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. This peptide is cyclic. The start position was chosen by similarity to Oak1 (kalata B1) for which the DNA sequence is known.