~30 Amino acids
||Gruber CW et al., Distribution and evolution of circular miniproteins in flowering plants. Plant Cell. 2008 Sep20(9):2471-83. p.2471 left columnPubMed ID18827180
||Craik DJ, Daly NL, Bond T, Waine C. Plant cyclotides: A unique family of cyclic and knotted proteins that defines the cyclic cystine knot structural motif. J Mol Biol. 1999 Dec 17 294(5):1327-36.PubMed ID10600388
||Cyclotides are ~30 amino acids in size and
have the unique structural features of a head-to-tail cyclized
backbone and a knotted arrangement of three-disulfide bonds,
referred to as a cyclic cystine knot (CCK) motif (primary source).