1WOJ:
reference: Crystal structure of the catalytic fragment of human brain 2',3'-cyclic-nucleotide 3'-phosphodiesterase., Sakamoto Y, Tanaka N, Ichimiya T, Kurihara T, Nakamura KT, J Mol Biol 2005 Feb 25;346(3):789-800. Epub 2005 Jan 12. PMID: 15713463

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