2H3A:
reference: Structural Basis for Nucleic Acid and Toxin Recognition of the Bacterial Antitoxin CcdA., Madl T, Van Melderen L, Mine N, Respondek M, Oberer M, Keller W, Khatai L, Zangger K, J Mol Biol. 2006 Nov 24;364(2):170-85. Epub 2006 Sep 1. PMID: 17007877

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