Anaerobic oxidation of ferrous iron by purple bacteria, a new type of phototrophic metabolism
- A. Ehrenreich, F. Widdel
- Materials ScienceApplied and Environmental Microbiology
- 1 December 1994
Anoxic iron-rich sediment samples that had been stored in the light showed development of brown, rusty patches and the existence of ferrous iron-oxidizing anoxygenic phototrophic bacteria may offer an explanation for the deposition of early banded-iron formations in an assumed anoxic biosphere in Archean times.
Clostridium ljungdahlii represents a microbial production platform based on syngas
- Michael Köpke, C. Held, P. Dürre
- Biology, EngineeringProceedings of the National Academy of Sciences…
- 2 July 2010
Clostridium ljungdahlii can be used as a unique microbial production platform based on synthesis gas and carbon dioxide/hydrogen mixtures, and successful expression of these genes could be demonstrated, leading to formation of the biofuel.
Ferrous iron oxidation by anoxygenic phototrophic bacteria
- F. Widdel, S. Schnell, S. Heising, A. Ehrenreich, B. Assmus, B. Schink
- ChemistryNature
- 3 February 1993
NATURAL oxidation of ferrous to ferric iron by bacteria such as Thiobacillus ferrooxidans or Gallionella ferruginea1, or by chemical oxidation2,3 has previously been thought always to involve…
Complete genome sequence of the acetic acid bacterium Gluconobacter oxydans
- C. Prust, M. Hoffmeister, U. Deppenmeier
- Biology, EngineeringNature Biotechnology
- 1 February 2005
The genome project revealed the unique biochemistry of G. oxydans with respect to the process of incomplete oxidation and revealed many membrane-bound dehydrogenases that are critical for the incomplete oxidation of biotechnologically important substrates.
The Complete Genome Sequence of Bacillus licheniformis DSM13, an Organism with Great Industrial Potential
- B. Veith, C. Herzberg, G. Gottschalk
- Biology, EngineeringJournal of Molecular Microbiology and…
- 1 September 2004
From the further analysis of the genome sequence, conserved regulatory DNA motives, the occurrence of the glyoxylate bypass and the presence of anaerobic ribonucleotide reductase explaining that B. licheniformis is able to grow on acetate and 2,3-butanediol as well as anaerobically on glucose.
Modifying the product pattern of Clostridium acetobutylicum
- D. Lehmann, Daniel Hönicke, T. Lütke-Eversloh
- Biology, EngineeringApplied Microbiology and Biotechnology
- 14 January 2012
Experimental evidence that butyrate, but not acetate, is re-assimilated via an Adc/CtfAB-independent pathway in C. acetobutylicum is provided, Interestingly, combining the adc and ctfA mutations with a knock-out of the phosphotransacetylase (Pta)-encoding gene, acetate production was drastically reduced, resulting in an increased flux towards butyrates.
Genome-Wide Gene Expression Analysis of the Switch between Acidogenesis and Solventogenesis in Continuous Cultures of Clostridium acetobutylicum
- Christina Grimmler, H. Janssen, A. Ehrenreich
- BiologyJournal of Molecular Microbiology and…
- 6 January 2011
Data indicate that solventogenesis is independent from sporulation, and new insights are led into the physiological role of several genes involved in solvent formation.
A proteomic and transcriptional view of acidogenic and solventogenic steady-state cells of Clostridium acetobutylicum in a chemostat culture
- H. Janssen, Christina Döring, R. Fischer
- BiologyApplied Microbiology and Biotechnology
- 9 July 2010
A first systematic study of acidogenic and solventogenic chemostat cultures is presented, and similarities as well as differences to previous studies of batch cultures are discussed.
Characterization of membrane-bound dehydrogenases from Gluconobacter oxydans 621H via whole-cell activity assays using multideletion strains
- Björn Peters, Markus Mientus, D. Kostner, A. Junker, W. Liebl, A. Ehrenreich
- BiologyApplied Microbiology and Biotechnology
- 22 March 2013
There are less membrane-bound dehydrogenases in G. oxydans 621H than expected and that the deletion of all of them is not lethal for the organism, demonstrating that general rules can be established for some of the enzymes and extended the known substrate spectra of some enzymes.
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