3V5R:
reference: The Gal3p transducer of the GAL regulon interacts with the Gal80p repressor in its ligand-induced closed conformation., Lavy T, Kumar PR, He H, Joshua-Tor L, Genes Dev. 2012 Feb 1;26(3):294-303. doi: 10.1101/gad.182691.111. PMID: 22302941

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