3N7B:
reference: New clues in the allosteric activation of DNA cleavage by SgrAI: structures of SgrAI bound to cleaved primary-site DNA and uncleaved secondary-site DNA., Little EJ, Dunten PW, Bitinaite J, Horton NC, Acta Crystallogr D Biol Crystallogr. 2011 Jan;67(Pt 1):67-74. Epub 2010, Dec 16. PMID: 21206063

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