3REC:
reference: An extended DNA structure through deoxyribose-base stacking induced by RecA protein., Nishinaka T, Ito Y, Yokoyama S, Shibata T, Proc Natl Acad Sci U S A 1997 Jun 24;94(13):6623-8. PMID: 9192615

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