1UDO:
reference: Crystal structure of the tRNA processing enzyme RNase PH from Aquifex aeolicus., Ishii R, Nureki O, Yokoyama S, J Biol Chem 2003 Aug 22;278(34):32397-404. PMID: 12746447

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