1P6U:
reference: Solution structures of the inactive and BeF3-activated response regulator CheY2., Riepl H, Scharf B, Schmitt R, Kalbitzer HR, Maurer T, J Mol Biol 2004 Apr 23;338(2):287-97. PMID: 15066432

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