5W43:
reference: Structural Basis for DNA Recognition by the Two-Component Response Regulator RcsB., Filippova EV, Zemaitaitis B, Aung T, Wolfe AJ, Anderson WF, MBio. 2018 Feb 27;9(1). pii: mBio.01993-17. doi: 10.1128/mBio.01993-17. PMID: 29487239

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