1O7L:
reference: Crystal structure of activated ModE reveals conformational changes involving both oxyanion and DNA-binding domains., Schuttelkopf AW, Boxer DH, Hunter WN, J Mol Biol 2003 Feb 21;326(3):761-7. PMID: 12581638

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