1W0U:
reference: How the human telomeric proteins TRF1 and TRF2 recognize telomeric DNA: a view from high-resolution crystal structures., Court R, Chapman L, Fairall L, Rhodes D, EMBO Rep. 2005 Jan;6(1):39-45. PMID: 15608617

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