3D2Q:
reference: Structural insights into RNA recognition by the alternative-splicing regulator muscleblind-like MBNL1., Teplova M, Patel DJ, Nat Struct Mol Biol. 2008 Dec;15(12):1343-51. Epub 2008 Nov 30. PMID: 19043415

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