Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/15392| Title: | Overexpression and reconstitution of a Rieske iron-sulfur protein from the cyanobacterium Synechocystis PCC 6803 |
| Authors: | Schneider, Dirk Jaschkowitz, Karin Seidler, Andreas Rogner, Matthias |
| Issue Date: | Dec-2000 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Chloroplast cyt b6f complexes as well as mitochondrial and bacterial cyt bc1 complexes contain a high potential Rieske iron-sulfur protein which is essential for their function. To characterise the isolated Rieske protein from the mesophilic cya-nobacterium Synechocystis PCC680 we cloned the encoding gene into an expression vector and overexpressed the protein m E. coli. In cells overexpressing the protein no typical Rieske type EPR signal was detected neither in membranes nor in inclusion bodies where the majority of the protein was deposited. The inclusion bodies were isolated from the E. coli cells and denaturated with 8 M urea. With a single anion exchange chromatographic step a pure protein could be obtained which was used for further experiments. The NifS like protein IscS was recently reported to mediate the incorporation of iron sulfur clusters into ferredoxin in vitro. We used the recombinant IscS protein for the incorporation of the cluster into the folded Rieske apoprotein. Spectroscopic characterisation of the resultant protein by CD and EPR spectroscopy showed the presence of a typical Rieske iron-sulfur centre. |
| Page(s): | 441-446 |
| ISSN: | 0975-0959 (Online); 0301-1208 (Print) |
| Appears in Collections: | IJBB Vol.37(6) [December 2000] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJBB 37(6) 441-446.pdf | 1.42 MB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.