5IDE:
reference: Structure and organization of heteromeric AMPA-type glutamate receptors., Herguedas B, Garcia-Nafria J, Cais O, Fernandez-Leiro R, Krieger J, Ho H, Greger IH, Science. 2016 Apr 29;352(6285):aad3873. doi: 10.1126/science.aad3873. Epub 2016, Mar 10. PMID: 26966189

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