4ESB:
reference: Crystal Structures of Two Transcriptional Regulators from Bacillus cereus Define the Conserved Structural Features of a PadR Subfamily., Fibriansah G, Kovacs AT, Pool TJ, Boonstra M, Kuipers OP, Thunnissen AM, PLoS One. 2012;7(11):e48015. doi: 10.1371/journal.pone.0048015. Epub 2012 Nov 26. PMID: 23189126

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