3VH5:
reference: CENP-T-W-S-X Forms a Unique Centromeric Chromatin Structure with a Histone-like Fold., Nishino T, Takeuchi K, Gascoigne KE, Suzuki A, Hori T, Oyama T, Morikawa K, Cheeseman IM, Fukagawa T, Cell. 2012 Feb 3;148(3):487-501. PMID: 22304917

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