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Ammonia Assimulation and Amino Acid Metabolism in Chloroflexus Aurantiacus

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Green Photosynthetic Bacteria

Summary

The thermophilic phototrophic prokaryote, Chloroflexus aurantiacus Ok-70-fl, grows only poorly in defined media tacking amino acids. The organism is unable to fix N2 (Heda and Madigan, 1986) but contains a Ni2+-stimulated membrane-bound hydrogenase of the uptake type (Drutschmann and Klemme, 1985). Of the main enzymes of ammonia assimilation (glutamate dehydrogenase, EC 1.41.2; alanine dehydrogenase, EC 1.41.1; glutamine synthetase, EC 6.3.1.2, and glutamate synthase, EC 1.41.13), only glutamine synthetase was detected in cell-free extracts of celts grown in complex or defined media.

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References

  • Drutschmann, M., and Klemme, J.-H., 1985, Sulfide-repressed, membrane-bound hydrogenase in the thermophilic facultative phototroph, Chloroftexus aurantiacus, FEMS Microbiol. Lett., 28:231.

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  • Heda, G.D., and Madigan, M.T., 1986, Utilization of amino acids and tack of diazotrophy in the thermophilic anoxygenic phototroph Chloroftexus aurantiacus, J. Gen. Microbiol., 132:2469.

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  • Kaulen, H., and Klemme, J.-H., 1983, No evidence of covalent modification of gtutamine synthetase in the thermophilic phototrophic bacterium Chloroftexus aurantiacus, FEMS Microbiol. Lett., 20:75.

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  • Laakmann-Ditges, G., and Klemme, J.-H., 1986, Occurrence of two L-threonine (L-serine) dehydratases in the thermophite Chloroftexus aurantiacus, Arch. Microbiol., 144:219.

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Author information

Authors and Affiliations

  1. Institut für Mikrobiotogie der Universität Bonn, Meckenheimer Allee 168, D-5300, Bonn 1, Germany

    J.-H. Klemme, G. Laakmann-Ditges & J. Mertschuweit

Authors
  1. J.-H. Klemme
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  2. G. Laakmann-Ditges
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  3. J. Mertschuweit
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Editor information

Editors and Affiliations

  1. Odense University, Odense, Denmark

    J. M. Olson

  2. University of Oslo, Oslo, Norway

    J. G. Ormerod

  3. State University of Leiden, Leiden, The Netherlands

    J. Amesz

  4. Christian-Albrechts-Universität, Kiel, Federal Republic of Germany

    E. Stackebrandt

  5. Rheinische Friedrich- Wilhelms-Universität, Bonn, Federal Republic of Germany

    H. G. Trüper

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© 1988 Plenum Press, New York

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Klemme, JH., Laakmann-Ditges, G., Mertschuweit, J. (1988). Ammonia Assimulation and Amino Acid Metabolism in Chloroflexus Aurantiacus . In: Olson, J.M., Ormerod, J.G., Amesz, J., Stackebrandt, E., Trüper, H.G. (eds) Green Photosynthetic Bacteria. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1021-1_22

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  • DOI: https://doi.org/10.1007/978-1-4613-1021-1_22

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4612-8296-9

  • Online ISBN: 978-1-4613-1021-1

  • eBook Packages: Springer Book Archive

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