4ODN:
reference: Molecular insights into substrate recognition and catalytic mechanism of the chaperone and FKBP peptidyl-prolyl isomerase SlyD., Quistgaard EM, Weininger U, Ural-Blimke Y, Modig K, Nordlund P, Akke M, Low C, BMC Biol. 2016 Sep 23;14(1):82. PMID: 27664121

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