6WET:
reference: Crystal structures of human ENPP1 in apo and bound forms., Dennis ML, Newman J, Dolezal O, Hattarki M, Surjadi RN, Nuttall SD, Pham T, Nebl T, Camerino M, Khoo PS, Monahan BJ, Peat TS, Acta Crystallogr D Struct Biol. 2020 Sep 1;76(Pt 9):889-898. doi:, 10.1107/S2059798320010505. Epub 2020 Aug 17. PMID: 32876064

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