2FJ7:
reference: Nucleosome core particles containing a poly(dA.dT) sequence element exhibit a locally distorted DNA structure., Bao Y, White CL, Luger K, J Mol Biol. 2006 Aug 25;361(4):617-24. Epub 2006 Jul 5. PMID: 16860337

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