5UOW:
reference: Cryo-EM structures of the triheteromeric NMDA receptor and its allosteric modulation., Lu W, Du J, Goehring A, Gouaux E, Science. 2017 Feb 23. pii: eaal3729. doi: 10.1126/science.aal3729. PMID: 28232581

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