2LWM:
reference: Solution structure of duplex DNA containing a beta-Carba-Fapy-dG lesion., Lukin M, Zaliznyak T, Attaluri S, Johnson F, de Los Santos C, Chem Res Toxicol. 2012 Nov 19;25(11):2423-31. doi: 10.1021/tx300290b. Epub 2012, Aug 29. PMID: 22897814

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