3HUE:
reference: Nbs1 flexibly tethers Ctp1 and Mre11-Rad50 to coordinate DNA double-strand break processing and repair., Williams RS, Dodson GE, Limbo O, Yamada Y, Williams JS, Guenther G, Classen S, Glover JN, Iwasaki H, Russell P, Tainer JA, Cell. 2009 Oct 2;139(1):87-99. PMID: 19804755

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