1U0B:
reference: Shape-selective RNA recognition by cysteinyl-tRNA synthetase., Hauenstein S, Zhang CM, Hou YM, Perona JJ, Nat Struct Mol Biol 2004 Nov;11(11):1134-41. Epub 2004 Oct 17. PMID: 15489861

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