3KIO:
reference: The structure of the mammalian RNase H2 complex provides insight into RNA.NA hybrid processing to prevent immune dysfunction., Shaban NM, Harvey S, Perrino FW, Hollis T, J Biol Chem. 2010 Feb 5;285(6):3617-24. Epub 2009 Nov 18. PMID: 19923215

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