4WD7:
reference: Structure and selectivity in bestrophin ion channels., Yang T, Liu Q, Kloss B, Bruni R, Kalathur RC, Guo Y, Kloppmann E, Rost B, Colecraft HM, Hendrickson WA, Science. 2014 Oct 17;346(6207):355-9. doi: 10.1126/science.1259723. Epub 2014 Sep, 25. PMID: 25324390

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