1NWQ:
reference: Structural basis for DNA recognition by the basic region leucine zipper transcription factor CCAAT/enhancer-binding protein alpha., Miller M, Shuman JD, Sebastian T, Dauter Z, Johnson PF, J Biol Chem 2003 Apr 25;278(17):15178-84. PMID: 12578822

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