5IZO:
reference: Structural Basis for the Bidirectional Activity of Bacillus nanoRNase NrnA., Schmier BJ, Nelersa CM, Malhotra A, Sci Rep. 2017 Sep 11;7(1):11085. doi: 10.1038/s41598-017-09403-x. PMID: 28894100

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