3U94:
reference: Zinc Potentiates GluK3 Glutamate Receptor Function by Stabilizing the Ligand Binding Domain Dimer Interface., Veran J, Kumar J, Pinheiro PS, Athane A, Mayer ML, Perrais D, Mulle C, Neuron. 2012 Nov 8;76(3):565-78. doi: 10.1016/j.neuron.2012.08.027. PMID: 23141068

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