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CO-dependent hydrogen production by the facultative anaerobe Parageobacillus thermoglucosidasius

Mohr, Teresa; Aliyu, Habibu; Küchlin, Raphael; Polliack, Shamara; Zwick, Michaela; Neumann, Anke; Cowan, Don; de Maayer, Pieter

Abstract:
Background

The overreliance on dwindling fossil fuel reserves and the negative climatic effects of using such fuels are driving the development of new clean energy sources. One such alternative source is hydrogen (H2), which can be generated from renewable sources. Parageobacillus thermoglucosidasius is a facultative anaerobic thermophilic bacterium which is frequently isolated from high temperature environments including hot springs and compost.


Results

Comparative genomics performed in the present study showed that P. thermoglucosidasius encodes two evolutionary distinct H2-uptake [Ni-Fe]-hydrogenases and one H2-evolving hydrogenases. In addition, genes encoding an anaerobic CO dehydrogenase (CODH) are co-localized with genes encoding a putative H2-evolving hydrogenase. The co-localized of CODH and uptake hydrogenase form an enzyme complex that might potentially be involved in catalyzing the water-gas shift reaction (CO + H2O → CO2 + H2) in P. thermoglucosidasius. Cultivation of P. thermoglucosidasius DSM 2542T with an initial gas atmosphere of 50% CO and 50% air showed it to be capable of growth at elevated CO concentrations (50%). ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000084786
Veröffentlicht am 24.07.2018
Originalveröffentlichung
DOI: 10.1186/s12934-018-0954-3
Scopus
Zitationen: 6
Web of Science
Zitationen: 6
Coverbild
Zugehörige Institution(en) am KIT Institut für Bio- und Lebensmitteltechnik (BLT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1475-2859
urn:nbn:de:swb:90-847867
KITopen-ID: 1000084786
Erschienen in Microbial cell factories
Band 17
Heft 1
Seiten Article: 108
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 09.07.2018
Schlagworte Biohydrogen production; Parageobacillus thermoglucosidasius; Carbon monoxide dehydrogenase; Hydrogenase; Water-gas shift reaction
Nachgewiesen in Web of Science
Scopus
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