5D46:
reference: Structural Basis for a New Templated Activity by Terminal Deoxynucleotidyl Transferase: Implications for V(D)J Recombination., Loc'h J, Rosario S, Delarue M, Structure. 2016 Sep 6;24(9):1452-1463. doi: 10.1016/j.str.2016.06.014. Epub 2016 , Aug 4. PMID: 27499438

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