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Magnetic circular dichroism study of the selenium-substituted form (Fe3Se4) of bovine heart aconitase


, : Magnetic circular dichroism study of the selenium-substituted form (Fe3Se4) of bovine heart aconitase. Biochemical Journal 311: 197-202

The selenium-substituted inactive form of mitochondrial aconitase contains one (3Fe-4Se)-1+/0 cluster (Surerus, Kennedy, Beinert and Munck (1989) Proc. Natl. Acad. Sci. U.S.A. 87,9846-9850). This cluster was studied in both oxidized and reduced states by magnetic CD (MCD) and EPR spectroscopy. In the MCD spectra, intensity and transition wavelength shifts are observed when compared with the spectra of the native (3Fe-4S)-1+/0 cluster.

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PMID: 7575454


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