2L2V:
reference: NMR solution structures of clustered abasic site lesions in DNA: structural differences between 3'-staggered (-3) and 5'-staggered (+3) bistranded lesions., Hazel RD, de los Santos C, Biochemistry. 2010 Oct 19;49(41):8978-87. PMID: 20825249

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