175D:
reference: DNA sequence GCGAATGAGC containing the human centromere core sequence GAAT forms a self-complementary duplex with sheared G.A pairs in solution., Chou SH, Cheng JW, Fedoroff O, Reid BR, J Mol Biol 1994 Aug 19;241(3):467-79. PMID: 8064859

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