3LH5:
reference: Insights into regulated ligand binding sites from the structure of ZO-1 Src homology 3-guanylate kinase module., Lye MF, Fanning AS, Su Y, Anderson JM, Lavie A, J Biol Chem. 2010 Apr 30;285(18):13907-17. Epub 2010 Mar 3. PMID: 20200156

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