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- W3146041497 abstract "The binding site for calcium(Ⅱ)on concanavalin A(con-A)can be occupied by rare earth ions.When terbium(Ⅲ)ion binds to con-A,its fluorescence intensity is tremendously enhanced because of an energy transfer from one or more tryptophan residues in close proximity to the bound terbium(Ⅲ).The dissociation constant of the con-A-Tb(Ⅲ)complex is 8.90×10~(-6)M,obtained from terbium(Ⅲ)fluorescence titration with con-A.The dissociation constant of the complexes of con-A with other rare earth and transition metal ions was obtained through their competition with terbium(Ⅲ)in the reaction with con-A,i.e.the quenching of con-A enhanced fluorescence.The results indicate that the binding of rare earth ions with con-A is dependent not only on their ionic radius but also on the hard-soft acid-base strength of the metal ions." @default.
- W3146041497 created "2021-04-13" @default.
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- W3146041497 date "1989-01-01" @default.
- W3146041497 modified "2023-09-23" @default.
- W3146041497 title "Terbium(III)as fluorescence probe in the study of the interaction of rare earth and transition metal ions with concanavalin A" @default.
- W3146041497 hasPublicationYear "1989" @default.
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