3JBR:
reference: Structure of the voltage-gated calcium channel Cav1.1 complex., Wu J, Yan Z, Li Z, Yan C, Lu S, Dong M, Yan N, Science. 2015 Dec 18;350(6267):aad2395. doi: 10.1126/science.aad2395. PMID: 26680202

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