1ZM5:
reference: Unveiling the Molecular Mechanism of a Conjugative Relaxase: The Structure of TrwC Complexed with a 27-mer DNA Comprising the Recognition Hairpin and the Cleavage Site., Boer R, Russi S, Guasch A, Lucas M, Blanco AG, Perez-Luque R, Coll M, de la Cruz F, J Mol Biol. 2006 May 5;358(3):857-69. Epub 2006 Feb 28. PMID: 16540117

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