1EAN:
reference: The RUNX1 Runt domain at 1.25A resolution: a structural switch and specifically bound chloride ions modulate DNA binding., Backstrom S, Wolf-Watz M, Grundstrom C, Hard T, Grundstrom T, Sauer UH, J Mol Biol 2002 Sep 13;322(2):259-72. PMID: 12217689

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