1PN2:
reference: A two-domain structure of one subunit explains unique features of eukaryotic hydratase 2., Koski MK, Haapalainen AM, Hiltunen JK, Glumoff T, J Biol Chem 2004 Jun 4;279(23):24666-72. Epub 2004 Mar 29. PMID: 15051722

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