5WEL:
reference: Channel opening and gating mechanism in AMPA-subtype glutamate receptors., Twomey EC, Yelshanskaya MV, Grassucci RA, Frank J, Sobolevsky AI, Nature. 2017 Jul 24. doi: 10.1038/nature23479. PMID: 28737760

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