5UBP:
reference: Structure of the Sac3 RNA-binding M-region in the Saccharomyces cerevisiae TREX-2 complex., Gordon JM, Aibara S, Stewart M, Nucleic Acids Res. 2017 Mar 15. doi: 10.1093/nar/gkx158. PMID: 28334829

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