3RDY:
reference: Conformational Changes of rBTI from Buckwheat upon Binding to Trypsin: Implications for the Role of the P(8)' Residue in the Potato Inhibitor I Family., Wang L, Zhao F, Li M, Zhang H, Gao Y, Cao P, Pan X, Wang Z, Chang W, PLoS One. 2011;6(6):e20950. Epub 2011 Jun 15. PMID: 21698291

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).