1IO2:
reference: Catalytic center of an archaeal type 2 ribonuclease H as revealed by X-ray crystallographic and mutational analyses., Muroya A, Tsuchiya D, Ishikawa M, Haruki M, Morikawa M, Kanaya S, Morikawa K, Protein Sci 2001 Apr;10(4):707-14. PMID: 11274461

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