Formate-Dependent H 2 Production by the Mesophilic Methanogen Methanococcus maripaludis
نویسندگان
چکیده
منابع مشابه
Prospects for Hydrogen Production from Formate by Methanococcus maripaludis
Most methanogenic Archaea are hydrogenotrophic, specializing in the use of hydrogen to reduce CO2 to methane. Even though these organisms have multiple hydrogenases that use hydrogen, there is good potential to use them for the net production of hydrogen. This is because some species can use alternative electron donors, most notably formate, and because some species have nitrogenases that can p...
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UNLABELLED Hydrogenotrophic methanogenic Archaea require reduced ferredoxin as an anaplerotic source of electrons for methanogenesis. H(2) oxidation by the hydrogenase Eha provides these electrons, consistent with an H(2) requirement for growth. Here we report the identification of alternative pathways of ferredoxin reduction in Methanococcus maripaludis that operate independently of Eha to sti...
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We report the characterization of the first chaperonin (Mm-cpn) from a mesophilic archaeon, Methanococcus maripaludis. The single gene was cloned from genomic DNA and expressed in Escherichia coli to produce a recombinant protein of 543 amino acids. In contrast with other known archaeal chaperonins, Mm-cpn is fully functional in all respects under physiological conditions of 37 degrees C. The c...
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Knowledge of taxis (directed swimming) in the Archaea is currently expanding through identification of novel receptors, effectors, and proteins involved in signal transduction to the flagellar motor. Although the ability for biological cells to sense and swim toward hydrogen gas has been hypothesized for many years, this capacity has yet to be observed and demonstrated. Here we show that the av...
متن کاملComplete genome sequence of the genetically tractable hydrogenotrophic methanogen Methanococcus maripaludis.
The genome sequence of the genetically tractable, mesophilic, hydrogenotrophic methanogen Methanococcus maripaludis contains 1,722 protein-coding genes in a single circular chromosome of 1,661,137 bp. Of the protein-coding genes (open reading frames [ORFs]), 44% were assigned a function, 48% were conserved but had unknown or uncertain functions, and 7.5% (129 ORFs) were unique to M. maripaludis...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 2008
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.01455-08