3H3U:
reference: Mapping conformational transitions in cyclic AMP receptor protein: crystal structure and normal-mode analysis of Mycobacterium tuberculosis apo-cAMP receptor protein., Kumar P, Joshi DC, Akif M, Akhter Y, Hasnain SE, Mande SC, Biophys J. 2010 Jan 20;98(2):305-14. PMID: 20338852

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