3VZA:
reference: CENP-T provides a structural platform for outer kinetochore assembly., Nishino T, Rago F, Hori T, Tomii K, Cheeseman IM, Fukagawa T, EMBO J. 2013 Feb 6;32(3):424-36. doi: 10.1038/emboj.2012.348. Epub 2013 Jan 18. PMID: 23334297

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