4FE3:
reference: Structural Basis of Substrate Specificity and Selectivity of Murine Cytosolic 5'-Nucleotidase III., Grobosky CL, Lopez JB, Rennie S, Skopelitis DJ, Wiest AT, Bingman CA, Bitto E, J Mol Biol. 2012 Nov 2;423(4):540-54. doi: 10.1016/j.jmb.2012.08.014. Epub 2012, Aug 25. PMID: 22925580

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