3NQU: Crystal Structure Of Partially Trypsinized (Cenp-Ah4)2 Hete
reference: The structure of (CENP-A-H4)(2) reveals physical features that mark centromeres., Sekulic N, Bassett EA, Rogers DJ, Black BE, Nature. 2010 Aug 25. PMID: 20739937

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