6G1K:
reference: Electron cryo-microscopy structure of the canonical TRPC4 ion channel., Vinayagam D, Mager T, Apelbaum A, Bothe A, Merino F, Hofnagel O, Gatsogiannis C, Raunser S, Elife. 2018 May 2;7. pii: 36615. doi: 10.7554/eLife.36615. PMID: 29717981

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