1QHK:
reference: NMR structure of the N-terminal domain of Saccharomyces cerevisiae RNase HI reveals a fold with a strong resemblance to the N-terminal domain of ribosomal protein L9., Evans SP, Bycroft M, J Mol Biol 1999 Aug 20;291(3):661-9. PMID: 10448044

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