1JS5:
reference: Solution structure of dAATAA and dAAUAA DNA bulges., Gollmick FA, Lorenz M, Dornberger U, von Langen J, Diekmann S, Fritzsche H, Nucleic Acids Res 2002 Jun 15;30(12):2669-77. PMID: 12060684

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