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Periplasmic Electron Transfer via the c -Type Cytochromes MtrA and FccA of Shewanella oneidensis MR-1
Open accessAbstract
Dissimilatory microbial reduction of insoluble Fe(III) oxides is a geochemically and ecologically important process which involves the transfer of cellular, respiratory electrons from the cytoplasmic membrane to insoluble, extracellular, mineral-phase electron acceptors. In this paper evidence is provided for the function of the periplasmic fumarate reductase FccA and the decaheme c -type cytochrome MtrA in periplasmic electron transfer reactions in the gammaproteobacterium Shewanella oneidensis . Both proteins are abundant in the periplasm of ferric citrate-reducing S. oneidensis cells. In vitro fumarate reductase FccA and c -type cytochrome MtrA were reduced by the cytoplasmic membrane-bound protein CymA. Electron transfer between CymA and MtrA was 1.4-fold faster than the CymA-catalyzed reduction of FccA. Further experiments showing a bidirectional electron transfer between FccA and MtrA provided evidence for an electron transfer network in the periplasmic space of S. oneidensis . Hence, FccA could function in both the electron transport to fumarate and via MtrA to mineral-phase Fe(III). Growth experiments with a Δ fccA deletion mutant suggest a role of FccA as a transient electron storage protein.
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Citations
Cites
Dissimilatory Fe(III) and Mn(IV) Reduction
Lovley, D. R., Holmes, D. E., & Nevin, K. P. (2004) · Advances in Microbial Physiology · doi:10.1016/s0065-2911(04)49005-5 · Cited by 1,471
Cited by
The interplay of microbially mediated and abiotic reactions in the biogeochemical Fe cycle
Melton, E. D., Swanner, E. D., Behrens, S., Schmidt, C., & Kappler, A. (2014) · Nature Reviews Microbiology · doi:10.1038/nrmicro3347 · Cited by 899
Ross, D. E., Flynn, J. M., Baron, D. B., Gralnick, J. A., & Bond, D. R. (2011) · PLoS ONE · doi:10.1371/journal.pone.0016649 · Cited by 366
Enhancing Bidirectional Electron Transfer of Shewanella oneidensis by a Synthetic Flavin Pathway
Yang, Y., Ding, Y., Hu, Y., Cao, B., Rice, S. A., Kjelleberg, S., & Song, H. (2015) · ACS Synthetic Biology · doi:10.1021/sb500331x · Cited by 290
Dissimilatory Reduction of Extracellular Electron Acceptors in Anaerobic Respiration
Richter, K., Schicklberger, M., & Gescher, J. (2012) · Applied and Environmental Microbiology · doi:10.1128/aem.06803-11 · Cited by 278
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Metadata
- Authors
- Schuetz, B., Schicklberger, M., Kuermann, J., Spormann, A. M., & Gescher, J.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 2009-12-15
- Volume
- 75
- Issue
- 24
- Pages
- 7789-7796
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W2035409691
- Cited by
- 165
- References
- 1
- FWCI
- 9.44
- Type
- journal article
- Language
- en
- Open access
- green
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- Schuetz, B., Schicklberger, M., Kuermann, J., Spormann, A. M., & Gescher, J. (2009). Periplasmic Electron Transfer via the c -Type Cytochromes MtrA and FccA of Shewanella oneidensis MR-1. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.01834-09
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