4BJS:
reference: Rif1 and Rif2 Shape Telomere Function and Architecture through Multivalent Rap1 Interactions., Shi T, Bunker RD, Mattarocci S, Ribeyre C, Faty M, Gut H, Scrima A, Rass U, Rubin SM, Shore D, Thoma NH, Cell. 2013 Jun 6;153(6):1340-53. doi: 10.1016/j.cell.2013.05.007. PMID: 23746845

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