3ZQ1:
reference: Visualizing GroEL/ES in the Act of Encapsulating a Folding Protein., Chen DH, Madan D, Weaver J, Lin Z, Schroder GF, Chiu W, Rye HS, Cell. 2013 Jun 6;153(6):1354-65. doi: 10.1016/j.cell.2013.04.052. PMID: 23746846

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