Characterization of the cadmium(II) binding site in Cd,Zn-metallothionein by magnetic circular dichroism spectroscopy |
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| Authors: | Annie YC Law Martin J Stillman |
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| Institution: | Department of Chemistry, University of Western Ontario London, Ontario, Canada, N6A 5B7 |
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| Abstract: | Absorption and magnetic circular dichroism spectra of rat liver Cd, Zn-metallothionein, and the cadmium complexes of propanethiolate and 1,2 propanedithiolate are reported. Observation of the same derivative-like MCD signal in the 250 nm region of each of these species provides experimental evidence for the assignment of the 250 nm shoulder in the Cd, Zn-metallothionein absorption spectrum as a sulfur to cadmium charge transfer band. |
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| Keywords: | Address correspondence to this author |
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