1D89:
reference: A DNA dodecamer containing an adenine tract crystallizes in a unique lattice and exhibits a new bend., DiGabriele AD, Steitz TA, J Mol Biol. 1993 Jun 20;231(4):1024-39. PMID: 8515463

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