期刊
DALTON TRANSACTIONS
卷 39, 期 18, 页码 4259-4266出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b917952f
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资金
- Portuguese science and technology foundation [MIT-Pt/BS-BB/0014/2008]
- FCT-Portugal [SFRH/BPD/34591/2007]
Shewanella are facultative anaerobic bacteria of remarkable respiratory versatility that includes the dissimilatory reduction of metal ores. They contain a large number of multiheme c-type cytochromes that play a significant role in various anaerobic respiratory processes. Of all the cytochromes found in Shewanella, only the two most abundant periplasmic cytochromes, the small tetraheme cytochrome (STC) and flavocytochrome c(3) (Fcc(3)) have been structurally characterized. For these two proteins the molecular bases for their redox properties were determined using spectroscopic methods based on paramagnetic NMR, that allow the contribution of specific hemes to be discriminated. In this perspective these results are reviewed in the context of the continuing effort to understand the molecular mechanisms of electron transfer in the respiratory chains of these organisms.
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