2P0X:
reference: Structure and Evolutionary Analysis of a Non-biological ATP-binding Protein., Mansy SS, Zhang J, Kummerle R, Nilsson M, Chou JJ, Szostak JW, Chaput JC, J Mol Biol. 2007 Aug 10;371(2):501-13. Epub 2007 May 26. PMID: 17583732

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