2XPH:
reference: The role of Co(2)+ in the crystallization of human SENP1 and comments on the limitations of automated refinement protocols., Rimsa V, Eadsforth T, Hunter WN, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Apr 1;67(Pt 4):442-5. Epub, 2011 Mar 24. PMID: 21505236

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