2YDB:
reference: Myelin 2',3'-cyclic nucleotide 3'-phosphodiesterase: active-site ligand binding and molecular conformation., Myllykoski M, Raasakka A, Han H, Kursula P, PLoS One. 2012;7(2):e32336. Epub 2012 Feb 29. PMID: 22393399

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