6BBG:
reference: Structures reveal opening of the store-operated calcium channel Orai., Hou X, Burstein SR, Long SB, Elife. 2018 Aug 30;7. pii: 36758. doi: 10.7554/eLife.36758. PMID: 30160233

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