2KVJ:
reference: The structure of a gamma-modified peptide nucleic acid duplex., He W, Crawford MJ, Rapireddy S, Madrid M, Gil RR, Ly DH, Achim C, Mol Biosyst. 2010 Apr 13. PMID: 20386807

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