4HTA:
reference: The Structure of the Karrikin-Insensitive Protein (KAI2) in Arabidopsis thaliana., Bythell-Douglas R, Waters MT, Scaffidi A, Flematti GR, Smith SM, Bond CS, PLoS One. 2013;8(1):e54758. doi: 10.1371/journal.pone.0054758. Epub 2013 Jan 18. PMID: 23349965

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