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ToolsLe Brun, Nick E., Moore, Geoffrey R. and Thomson, Andrew J. (1995) Magnetic circular dichroism spectroscopy of the iron cores of ferritin and bacterioferritin. Molecular Physics, 85 (6). pp. 1061-1068. ISSN 0026-8976
Full text not available from this repository.Abstract
Ferritin and bacterioferritin (BFR) are iron-storage proteins that contain mineralized non-haem iron cores which have a maximum diameter of 80 A. The relationships between the magnetic properties and chemical characteristics of these cores are not fully understood, and to help define these we have used magnetic circular dichroism (MCD) spectroscopy in study of these molecules. The MCD spectra reported here are the first examples where this technique has been applied to a study of both the ferritin and the BFR core. It is clear that the two core types have different spectral characteristics in accord with their different chemical composition. At low temperature (<4K) the ferritin core displays a form of magnetic hysteresis which is not observed when the temperature is raised to 77 K. In contrast, the BFR core does not give rise to such an effect even at very low temperature. The data appear to indicate that the ferritin core is highly anisotropic at low temperature whereas the BFR core is not, and that spin relaxation between the ground state energy levels of the ferritin core is exceedingly slow.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | biophysics,molecular biology,condensed matter physics,physical and theoretical chemistry ,/dk/atira/pure/subjectarea/asjc/1300/1304 |
| Faculty \ School: | Faculty of Science > School of Chemistry (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Centres > Centre for Molecular and Structural Biochemistry Faculty of Science > Research Groups > Chemistry of Life Processes |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 18 Jun 2025 09:30 |
| Last Modified: | 14 Jul 2025 12:31 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/99611 |
| DOI: | 10.1080/00268979500101661 |
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