6XWB:
reference: An (R)-Selective Transaminase From Thermomyces stellatus: Stabilizing the Tetrameric Form., Heckmann CM, Gourlay LJ, Dominguez B, Paradisi F, Front Bioeng Biotechnol. 2020 Jul 22;8:707. doi: 10.3389/fbioe.2020.00707., eCollection 2020. PMID: 32793563

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