1L5Y:
reference: Two-component signaling in the AAA + ATPase DctD: binding Mg2+ and BeF3- selects between alternate dimeric states of the receiver domain., Park S, Meyer M, Jones AD, Yennawar HP, Yennawar NH, Nixon BT, FASEB J 2002 Dec;16(14):1964-6. Epub 2002 Oct 4. PMID: 12368235

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