| Literature DB >> 2985428 |
T V Morgan, P J Stephens, F Devlin, B K Burgess, C D Stout.
Abstract
The destructive oxidation of aerobically isolated 7Fe Azotobacter vinelandii ferredoxin I [(7Fe)FdI] by Fe(CN)3-6 is examined using low-temperature magnetic circular dichroism (MCD) and EPR. The results demonstrate that oxidation of the [3Fe-3S] cluster occurs only after essentially complete destruction of the [4Fe-4S] cluster. It is therefore feasible by controlled Fe(CN)3-6 oxidation to obtain a partially metallated form of FdI, (3Fe)FdI, containing only a [3Fe-3S] cluster. The MCD and EPR data demonstrate that the [3Fe-3S] cluster in (3Fe)FdI is essentially identical in structure to that in the native protein.Entities:
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Year: 1985 PMID: 2985428 DOI: 10.1016/0014-5793(85)80777-8
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124