Has antimicrobial activities against bacteria and fungi. Forms a cyclic homodimer; disulfide-linked. This is a cyclic peptide. Belongs to the alpha-defensin family. Theta subfamily. The mature 9-residue peptide is expected to be found in 18-residue cyclopeptides produced by combinatorial peptide splicing either with itself or with other demidefensins. However among cyclopeptides screened for antimicrobial activity, no peptides that would have been produced from this sequence were detected.