2LIB:
reference: DNA sequence context conceals alpha-anomeric lesions., Johnson CN, Spring AM, Desai S, Cunningham RP, Germann MW, J Mol Biol. 2012 Feb 24;416(3):425-37. Epub 2011 Dec 29. PMID: 22227386

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