1BHC:
reference: The decameric structure of bovine pancreatic trypsin inhibitor (BPTI) crystallized from thiocyanate at 2.7 A resolution., Hamiaux C, Prange T, Ries-Kautt M, Ducruix A, Lafont S, Astier JP, Veesler S, Acta Crystallogr D Biol Crystallogr 1999 Jan;55 ( Pt 1):103-13. PMID: 10089400

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