Results 101 to 110 of about 3,266 (195)

Acetogenesis in the energy-starved deep biosphere – a paradox?

Frontiers in Microbiology, 2012
Under anoxic conditions in sediments, acetogens are often thought to be outcompeted by microorganisms performing energetically more favorable metabolic pathways, such as sulfate reduction or methanogenesis. Recent evidence from deep subseafloor sediments
Mark Alexander Lever
doaj   +1 more source

The Complete Genome Sequence of Clostridium aceticum: a Missing Link between Rnf- and Cytochrome-Containing Autotrophic Acetogens

, 2015
Clostridium aceticum was the first isolated autotrophic acetogen, converting CO2 plus H2 or syngas to acetate. Its genome has now been completely sequenced and consists of a 4.2-Mbp chromosome and a small circular plasmid of 5.7 kbp.
Poehlein, Anja, Andreesen, Jan R., Rolf Daniel, Cebulla, Martin, Daniel, Rolf, Bengelsdorf, Frank R., Jan R. Andreesen, Duerre, Peter, Gerhard Gottschalk, Peter Dürre, Bettina Schiel-Bengelsdorf, Marcus M. Ilg, Whited, Gregg, Gottschalk, Gerhard, Frank R. Bengelsdorf, Anja Poehlein, Ilg, Marcus M., Martin Cebulla, Gregg Whited, Schiel-Bengelsdorf, Bettina   +19 more
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Valorization of carbon dioxide by electrocatalytic reduction coupled to acetogens via multiple electron carriers (Ecat-acetogens)

, 2023
For the realization of a sustainable energy economy, it is of great importance to develop CO2 -neutral methods producing multi-carbon organic chemicals used as feedstock as well as carbon-neutral fuels by CO2 capture and conversion.
Rieck, Arielle, Schwarz, Irina
core  

Acetogen Communities in the Gut of Herbivores and Their Potential Role in Syngas Fermentation

Fermentation, 2018
To better understand the effects of host selection on gut acetogens and their potential role in syngas fermentation, the composition and hydrogenotrophic features of acetogen populations in cow and sheep rumens, rabbit ceca, and horse feces were studied.
Chunlei Yang
doaj   +1 more source

Metabolic versatility of acetogens in syngas fermentation: responding to varying CO availability [PDF]

Syngas fermentation using acetogenic bacteria offers a promising route for sustainable chemical production. However, gasliquid mass transfer limitations and efficient co-utilization of CO and H2 pose significant challenges.
Domingues, Lucília, Alves, Joana I., Moreira, João Paulo Carvalho   +2 more
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Maintenance of ATP homeostasis triggers metabolic shifts in gas-fermenting acetogens

, 2017
Acetogens are promising cell factories for producing fuels and chemicals from waste feedstocks via gas fermentation, but quantitative characterization of carbon, energy, and redox metabolism is required to guide their rational metabolic engineering. Here,
Nielsen, Lars Keld, Abdalla, Tanus, Simpson, Sean Dennis, Björn Daniel Heijstra, Kopke, Michael, Michael Köpke, Tappel, Ryan, Tanus Abdalla, Kieran Meaghan, James Bruce Behrendorff, Lemgruber, Renato de Souza Pinto, Renato de Souza Pinto Lemgruber, Robin William Palfreyman, Ryan Tappel, Meaghan, Kieran, Esteban Marcellin, Lars Keld Nielsen, Palfreyman, Robin William, Behrendorff, James Bruce, Valgepea, Kaspar, Heijstra, Bjom Daniel, Séan Dennis Simpson, Kaspar Valgepea, Marcellin, Esteban   +23 more
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Acetogens beyond gas fermentation : enhancing bioconversion of lignocellulosic biomass

As the demand for sustainable and cost-effective bioprocesses intensifies, acetogenic bacteria have gained renewed attention for their unique metabolic capabilities. Traditionally recognised for their role in gas fermentation, these anaerobes fix CO2 and
De Winter, Karel, Vlaeminck, Elodie, Uitterhaegen, Evelien, Palucha, Natálie, Quataert, Koen, Soetaert, Wim   +5 more
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Insights into old and new acetogens: transformation barriers and genomics

, 2019
Even though Clostridium aceticum is the first described acetogen, no reproducible protocol for genetic modification has been published in a peer-reviewed scientific article. Furthermore, C. aceticum possesses cytochromes with still unknown function.
Karl, Michael Maximilian
core   +1 more source

Simultaneous Formate and Syngas Conversion Boosts Growth and Product Formation by Clostridium ragsdalei

Molecules
Electrocatalytic CO2 reduction to CO and formate can be coupled to gas fermentation with anaerobic microorganisms. In combination with a competing hydrogen evolution reaction in the cathode in aqueous medium, the in situ, electrocatalytic produced syngas
Irina Schwarz, Angelina Angelina, Philip Hambrock, Dirk Weuster-Botz   +3 more
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Acetogens and acetoclastic methanosarcinales govern methane formation in abandoned coal mines.

, 2011
In abandoned coal mines, methanogenic archaea are responsible for the production of substantial amounts of methane. The present study aimed to directly unravel the active methanogens mediating methane release as well as active bacteria potentially ...
Engelen, B., Beckmann, S., Bert Engelen, Martin Krüger, Cypionka, H., Lüders, T., Krüger, M., von Netzer, F., Sabrina Beckmann, Heribert Cypionka, Tillmann Lueders, Frederick von Netzer   +11 more
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