2JXV:
reference: Solution structure of a let-7 miRNA:lin-41 mRNA complex from C. elegans., Cevec M, Thibaudeau C, Plavec J, Nucleic Acids Res. 2008 Apr;36(7):2330-7. Epub 2008 Feb 22. PMID: 18296482

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