2EX5: Group I Intron-Encoded Homing Endonuclease I-Ceui Complexed
reference: The structure of I-CeuI homing endonuclease: Evolving asymmetric DNA recognition from a symmetric protein scaffold., Spiegel PC, Chevalier B, Sussman D, Turmel M, Lemieux C, Stoddard BL, Structure. 2006 May;14(5):869-80. PMID: 16698548

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