1T9J:
reference: Metal-dependent DNA cleavage mechanism of the I-CreI LAGLIDADG homing endonuclease., Chevalier B, Sussman D, Otis C, Noel AJ, Turmel M, Lemieux C, Stephens K, Monnat RJ Jr, Stoddard BL, Biochemistry 2004 Nov 9;43(44):14015-26. PMID: 15518550

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