2DND:
reference: A bifurcated hydrogen-bonded conformation in the d(A.T) base pairs of the DNA dodecamer d(CGCAAATTTGCG) and its complex with distamycin., Coll M, Frederick CA, Wang AH, Rich A, Proc Natl Acad Sci U S A 1987 Dec;84(23):8385-9. PMID: 3479798

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