| Literature DB >> 19821611 |
Youli Xiao1, Georgia Zahariou, Yiannis Sanakis, Pinghua Liu.
Abstract
IspG is a [4Fe-4S] cluster-containing protein, and the [4Fe-4S](+) species is proposed to be the catalytically relevant species. However, attempts reported in the literature failed to detect the [4Fe-4S](+) species. In this study, using a potent reduction system, we have successfully detected the [4Fe-4S](+) species with X-band EPR spectroscopy. In addition, we have improved the Escherichia coli IspG activity to 550 nmol min(-1) mg(-1), which is approximately 20-fold greater than that of the NADPH-Fpr-FldA system in the literature.Entities:
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Year: 2009 PMID: 19821611 DOI: 10.1021/bi901519q
Source DB: PubMed Journal: Biochemistry ISSN: 0006-2960 Impact factor: 3.162