6R5K:
reference: Molecular Basis for poly(A) RNP Architecture and Recognition by the Pan2-Pan3 Deadenylase., Schafer IB, Yamashita M, Schuller JM, Schussler S, Reichelt P, Strauss M, Conti E, Cell. 2019 May 14. pii: S0092-8674(19)30399-X. doi: 10.1016/j.cell.2019.04.013. PMID: 31104843

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