3SGL:
reference: Structural basis for hypermodification of the wobble uridine in tRNA by bifunctional enzyme MnmC., Kim J, Almo SC, BMC Struct Biol. 2013 Apr 24;13:5. doi: 10.1186/1472-6807-13-5. PMID: 23617613

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