5GPC:
reference: Structural basis of operator sites recognition and effector binding in the TetR family transcription regulator FadR., Yeo HK, Park YW, Lee JY, Nucleic Acids Res. 2017 Apr 20;45(7):4244-4254. doi: 10.1093/nar/gkx009. PMID: 28160603

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