3R3P:
reference: Activity, specificity and structure of I-Bth0305I: a representative of a new homing endonuclease family., Taylor GK, Heiter DF, Pietrokovski S, Stoddard BL, Nucleic Acids Res. 2011 Sep 2. PMID: 21890897

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