4I9O:
reference: Ordering a Dynamic Protein Via a Small-Molecule Stabilizer., Wang N, Majmudar CY, Pomerantz WC, Gagnon JK, Sadowsky JD, Meagher JL, Johnson TK, Stuckey JA, Brooks CL 3rd, Wells JA, Mapp AK, J Am Chem Soc. 2013 Feb 22. PMID: 23384013

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