5IWP:
reference: Crystal structure of the epithelial calcium channel TRPV6., Saotome K, Singh AK, Yelshanskaya MV, Sobolevsky AI, Nature. 2016 Jun 13;534(7608):506-11. doi: 10.1038/nature17975. PMID: 27296226

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