2H2N: Crystal Structure Of Human Soluble Calcium-Activated Nucleot (Scan) With Calcium Ion
reference: Calcium-dependent dimerization of human soluble calcium activated nucleotidase: characterization of the dimer interface., Yang M, Horii K, Herr AB, Kirley TL, J Biol Chem. 2006 Sep 22;281(38):28307-17. Epub 2006 Jul 11. PMID: 16835225

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