5F6T:
reference: Binding of Gd(3+) to the neuronal signalling protein calexcitin identifies an exchangeable Ca(2+)-binding site., Chataigner L, Guo J, Erskine PT, Coker AR, Wood SP, Gombos Z, Cooper JB, Acta Crystallogr F Struct Biol Commun. 2016 Apr 1;72(Pt 4):276-81. doi:, 10.1107/S2053230X16003526. Epub 2016 Mar 16. PMID: 27050260

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