1HI5:
reference: Mapping the ribonucleolytic active site of eosinophil-derived neurotoxin (EDN). High resolution crystal structures of EDN complexes with adenylic nucleotide inhibitors., Leonidas DD, Boix E, Prill R, Suzuki M, Turton R, Minson K, Swaminathan GJ, Youle RJ, Acharya KR, J Biol Chem 2001 May 4;276(18):15009-17. PMID: 11154698

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