3Q15:
reference: Structural basis of response regulator dephosphorylation by Rap phosphatases., Parashar V, Mirouze N, Dubnau DA, Neiditch MB, PLoS Biol. 2011 Feb 8;9(2):e1000589. PMID: 21346797

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