4HIV:
reference: The structural basis of actinomycin D-binding induces nucleotide flipping out, a sharp bend and a left-handed twist in CGG triplet repeats., Lo YS, Tseng WH, Chuang CY, Hou MH, Nucleic Acids Res. 2013 Apr 1;41(7):4284-94. doi: 10.1093/nar/gkt084. Epub 2013, Feb 13. PMID: 23408860

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