4FDG:
reference: Mini-chromosome maintenance complexes form a filament to remodel DNA structure and topology., Slaymaker IM, Fu Y, Toso DB, Ranatunga N, Brewster A, Forsburg SL, Zhou ZH, Chen XS, Nucleic Acids Res. 2013 Jan 29. PMID: 23361460

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