3Q2S:
reference: Crystal Structure of a Human Cleavage Factor CFI(m)25/CFI(m)68/RNA Complex Provides an Insight into Poly(A) Site Recognition and RNA Looping., Yang Q, Coseno M, Gilmartin GM, Doublie S, Structure. 2011 Feb 2. PMID: 21295486

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