3P22:
reference: Poly(A) tail recognition by a viral RNA element through assembly of a triple helix., Mitton-Fry RM, DeGregorio SJ, Wang J, Steitz TA, Steitz JA, Science. 2010 Nov 26;330(6008):1244-7. PMID: 21109672

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