6UCK:
reference: Pro-Islet Amyloid Polypeptide in Micelles Contains a Helical Prohormone Segment., DeLisle CF, Malooley AL, Banerjee I, Lorieau JL, FEBS J. 2020 Feb 19. doi: 10.1111/febs.15253. PMID: 32077246

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