6Y4L:
reference: The architecture of EMC reveals a path for membrane protein insertion., O'Donnell JP, Phillips BP, Yagita Y, Juszkiewicz S, Wagner A, Malinverni D, Keenan RJ, Miller EA, Hegde RS, Elife. 2020 May 27;9. pii: 57887. doi: 10.7554/eLife.57887. PMID: 32459176

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