5KI0:
reference: Membrane-Active Epithelial Keratin 6A Fragments (KAMPs) Are Unique Human Antimicrobial Peptides with a Non-alphabeta Structure., Lee JT, Wang G, Tam YT, Tam C, Front Microbiol. 2016 Nov 11;7:1799. eCollection 2016. PMID: 27891122

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