Extracellular reduction of hexavalent chromium by cytochromes MtrC and OmcA of Shewanella oneidensis MR-1.

@article{Belchik2011ExtracellularRO,
  title={Extracellular reduction of hexavalent chromium by cytochromes MtrC and OmcA of Shewanella oneidensis MR-1.},
  author={Sara Mae Belchik and David W. Kennedy and Alice Dohnalkova and Yuanmin Wang and Papatya C Sevinç and Hong Wu and Yuehe Lin and H. Peter Lu and James K. Fredrickson and Liang Shi},
  journal={Applied and environmental microbiology},
  year={2011},
  volume={77 12},
  pages={4035-41}
}
To characterize the roles of cytochromes MtrC and OmcA of Shewanella oneidensis MR-1 in Cr(VI) reduction, the effects of deleting the mtrC and/or omcA gene on Cr(VI) reduction and the cellular locations of reduced Cr(III) precipitates were investigated. Compared to the rate of reduction of Cr(VI) by the wild type (wt), the deletion of mtrC decreased the initial rate of Cr(VI) reduction by 43.5%, while the deletion of omcA or both mtrC and omcA lowered the rate by 53.4% and 68.9%, respectively… CONTINUE READING
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