3J5Q:
reference: TRPV1 structures in distinct conformations reveal activation mechanisms., Cao E, Liao M, Cheng Y, Julius D, Nature. 2013 Dec 5;504(7478):113-8. doi: 10.1038/nature12823. PMID: 24305161

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