5CQQ:
reference: Structure of Zeste-DNA Complex Reveals a New Modality of DNA Recognition by Homeodomain-Like Proteins., Gao GN, Wang M, Yang N, Huang Y, Xu RM, J Mol Biol. 2015 Dec 4;427(24):3824-33. doi: 10.1016/j.jmb.2015.10.008. Epub 2015, Oct 21. PMID: 26478222

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