Abstract
Rhodobacter capsulatus is a purple phototrophic bacterium that, in the presence of light and under low oxygen tensions, synthesises ATP through an anoxygenic electron transport around a single photosystem (1). A shift to aerobic conditions induces the accumulation of respiratory enzymes (2), while the genes encoding the photosynthetic apparatus are repressed at the transcriptional level (3). The onset of respiration confronts the growing bacteria with still an additional challenge, as the reduction of molecular oxygen leads to the formation of toxic active species, such as hydrogen peroxide (H2O2) and the superoxide (O2 -) and hydroxyl (OH) radicals. These compounds are unavoidable by-products of aerobic metabolism, and damage a wide range of biomolecules, most conspicuously DNA (4).
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References
Drews, G. and Imhoff, J.F. (1991) in Variations in Autotrophic Life (Shively J.M. and Barton L.L., eds.) pp. 51–97, Academic Press, N.Y.
Dastoor, F.P., Forrest, M.E. and Beatty, J.T. (1997) J. Bacteriol. 179, 4559–4566
Bauer, C. (1995) in Anoxygenic photosynthetic bacteria (Blankenship R., Madigan T.M. and Bauer C., eds.) pp. 1221–1234,. Kluwer, Dordrecht, The Netherlands
Imlay, J.A. and Linn, S. (1988) Science 240, 1302–1309
Scandalios, J.G. (1993) Plant Physiol. 101, 7–12
Fridovich, I. (1995) Annu. Rev. Biochem. 64, 97–112
Hochman A., Figueredo, A. and Wall, J. (1992) J. Bacteriol. 174, 3386–3391
Pasternak, C., Asemat, K., Clément, J. and Klug, G. (1997) Microbiology 143, 83–91
Carlioz, A. and Touati, D. (1986) EMBO J. 5, 623–630
Sambrook, J., Fritsch, E.F. and Maniatis, T. (1989) Molecular Cloning. A Laboratory Manual, ri ed., CSH Laboratory, Cold Spring Harbor, N.Y.
Donahue, J.L., Moses Okpodu, C., Cramer, C.L., Grabau, E.A. and Alscher, R.G. (1997) Plant Physiol. 113, 249–257
Simon, R., Priefer, U. and Pithier, A. (1983) Bio/Technology 1, 784–791
Compan, I. and Touati, D. (1993) J. Bacteriol. 175, 1687–1696
Hidalgo, E., Ding, H. and Demple, B. (1997) Trends Biol. Sci. 22, 207–210
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© 1998 Springer Science+Business Media Dordrecht
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Cortez, N., Pasternak, C., Balzer, A., Carrillo, N., Klug, G. (1998). The Iron-Containing Superoxide Dismutase of Rhodobacter Capsulatus is Essential for Aerobic Viability. In: Garab, G. (eds) Photosynthesis: Mechanisms and Effects. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3953-3_466
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DOI: https://doi.org/10.1007/978-94-011-3953-3_466
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-5547-2
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