2M7R:
reference: From molecular phylogeny towards differentiating pharmacology for NMDA receptor subtypes., Platt RJ, Curtice KJ, Twede VD, Watkins M, Gruszczynski P, Bulaj G, Horvath MP, Olivera BM, Toxicon. 2014 Apr;81:67-79. doi: 10.1016/j.toxicon.2014.01.016. Epub 2014 Feb 7. PMID: 24508768

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