Expression in Escherichia coli and characterization of a recombinant 7Fe ferredoxin of Rhodobacter capsulatus
- 15 August 1992
- journal article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 286 (1) , 269-273
- https://doi.org/10.1042/bj2860269
Abstract
The 7Fe ferredoxin of Rhodobacter capsulatus (FdII) could be expressed in Escherichia coli by cloning the fdxA gene coding for FdII downstream from the lac promoter. The expressed recombinant ferredoxin appeared as a brown protein which was specifically recognized in E. coli cell-free extracts by anti-FdII serum. The purified recombinant ferredoxin was indistinguishable from R. capsulatus FdII on the basis of its molecular, redox and spectroscopic properties. These results indicate that the [3Fe-4S] and [4Fe-4S] clusters were correctly inserted into the recombinant ferredoxin.Keywords
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