5N5N:
reference: Tubulin isoform composition tunes microtubule dynamics., Vemu A, Atherton J, Spector JO, Moores CA, Roll-Mecak A, Mol Biol Cell. 2017 Oct 11. pii: mbc.E17-02-0124. doi: 10.1091/mbc.E17-02-0124. PMID: 29021343

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