Chassatide C11: Probably participates in a plant defense mechanism (Probable). Active against E.coli ATCC 25922 (MIC=8.5 uM) but not against S.aureus ATCC 12600 or S.epidermidis ATCC 14990 (PubMed:22467870). Has cytotoxic and hemolytic activity (PubMed:22467870). Chassatide C11A: Probably participates in a plant defense mechanism (Probable). Has no activity against bacteria up to a concentration of 80 uM (PubMed:22467870). Has no cytotoxic and no hemolytic activity (PubMed:22467870). Expressed in fruit, pedicel and stem but not in leaf and root (at protein level). The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Chassatide cha11A. Belongs to the cyclotide family. Bracelet subfamily. This peptide is linear as it lacks the C-terminal Asp/Asn residue required for cyclization.