2IHN:
reference: Crystal structure of bacteriophage T4 5' nuclease in complex with a branched DNA reveals how FEN-1 family nucleases bind their substrates., Devos JM, Tomanicek SJ, Jones CE, Nossal NG, Mueser TC, J Biol Chem. 2007 Aug 9;. PMID: 17693399

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