4DLQ:
reference: A novel evolutionarily conserved domain of cell-adhesion GPCRs mediates autoproteolysis., Arac D, Boucard AA, Bolliger MF, Nguyen J, Soltis SM, Sudhof TC, Brunger AT, EMBO J. 2012 Feb 14;31(6):1364-78. doi: 10.1038/emboj.2012.26. PMID: 22333914

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