2CJK:
reference: Grabbing the message: structural basis of mRNA 3'UTR recognition by Hrp1., Perez-Canadillas JM, EMBO J. 2006 Jul 12;25(13):3167-78. Epub 2006 Jun 22. PMID: 16794580

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