Results 71 to 80 of about 10,534 (145)

A Novel Polyphosphate‐Degrading Enzyme Confers Growth on Exogenous Polyphosphate in the Archaeon Haloferax volcanii

Environmental Microbiology, Volume 28, Issue 7, July 2026.
A novel polyP‐degrading enzyme with an activity differing from those currently known was found in Haloferax volcanii, conferring the ability for this microbe to grow on extracellular polyP. These findings further our understanding of the potential ecological roles of polyP and how archaea metabolise this essential biopolymer.
Jack W. F. Nicholls, Vincent O'Flaherty, Timothy M. Lenton, John W. McGrath, Jason P. Chin   +4 more
wiley   +1 more source

The Role of Active Site Residues in ATP Binding and Catalysis in the Methanosarcina thermophila Acetate Kinase

Life, 2015
Acetate kinase (ACK), which catalyzes the reversible phosphorylation of acetate by ATP, is a member of the acetate and sugar kinase/heat shock cognate/actin (ASKHA) superfamily. ASKHA family members share a common core fold that includes an ATPase domain
Cheryl Ingram-Smith, Jeffrey Wharton, Christian Reinholz, Tara Doucet, Rachel Hesler, Kerry Smith   +5 more
doaj   +1 more source

In Vivo Enzyme Catalytic Rates in Formate‐Growing Methanococcus maripaludis

Microbial Biotechnology, Volume 19, Issue 7, July 2026.
In vivo catalytic rates of Methanococcus maripaludis enzymes during C1 carbon source limited growth were determined from metabolic model estimated fluxes and proteomics data. They showed weak agreement with turnover numbers predicted from sequences.
Celma Mekki, Hamza Faquir, Enrique de Dios Mateos, Silvan Scheller, Paula Jouhten   +4 more
wiley   +1 more source

Population turnover and food-web reorganization sustain acetoclastic methanogenesis at 45 °C in tropical paddy soil

Geoderma
Moderately thermophilic temperatures (45 °C) are widely expected to suppress acetoclastic methanogenesis in paddy soils because thermodynamic constraints favor syntrophic acetate oxidation coupled with hydrogenotrophic pathways.
Xin Li, Jun Zhou, Werner Liesack
doaj   +1 more source

Methane-Linked Mechanisms of Electron Uptake from Cathodes by Methanosarcina barkeri

mBio, 2019
The Methanosarcinales, a lineage of cytochrome-containing methanogens, have recently been proposed to participate in direct extracellular electron transfer interactions within syntrophic communities.
Annette R. Rowe, Shuai Xu, Emily Gardel, Arpita Bose, Peter Girguis, Jan P. Amend, Mohamed Y. El-Naggar   +6 more
doaj   +1 more source

Nitrite-reductase and peroxynitrite isomerization activities of Methanosarcina acetivorans protoglobin.

PLoS ONE, 2014
Within the globin superfamily, protoglobins (Pgb) belong phylogenetically to the same cluster of two-domain globin-coupled sensors and single-domain sensor globins. Multiple functional roles have been postulated for Methanosarcina acetivorans Pgb (Ma-Pgb)
Paolo Ascenzi, Loris Leboffe, Alessandra Pesce, Chiara Ciaccio, Diego Sbardella, Martino Bolognesi, Massimo Coletta   +6 more
doaj   +1 more source

Mixotrophic growth of two thermophilic Methanosarcina strains, Methanosarcina thermophila TM-1 and Methanosarcina sp. SO-2P, on methanol and hydrogen/carbon dioxide

, 1997
Two thermophilic strains, Methanosarcina thermophila TM-1 and Methanosarcina sp. SO-2P, were capable of mixotrophic growth on methanol and H-2/CO2. Activated carbon was, however, found to be necessary to support good growth.
Mladenovska, Zuzana, Ahring, Birgitte Kiær   +1 more
core  

Electron transport in acetate-grown Methanosarcina acetivorans

BMC Microbiology, 2011
Background Acetate is the major source of methane in nature. The majority of investigations have focused on acetotrophic methanogens for which energy-conserving electron transport is dependent on the production and consumption of H2 as an intermediate ...
Ferry James G, Tomb Jean-Francois, Wang Mingyu   +2 more
doaj   +1 more source

Seasonal Composition and Structure of Methane-Cycling Communities in Alpine Lake Sediments of the Rila Mountains

Microorganisms
The global methane budget is largely driven by biogenic sources, many of which remain insufficiently characterized. Here, we investigated the community composition and seasonal dynamics of methanogenic and methanotrophic assemblages to elucidate the key ...
Boyanka Angelova, Silvena Boteva, Anelia Kenarova   +2 more
doaj   +1 more source

Uncovering the small proteome of Methanosarcina mazei using Ribo-seq and peptidomics under different nitrogen conditions

Nature Communications
The mesophilic methanogenic archaeal model organism Methanosarcina mazei strain Gö1 is crucial for climate and environmental research due to its ability to produce methane. Here, we establish a Ribo-seq protocol for M.
Muhammad Aammar Tufail, Britta Jordan, Lydia Hadjeras, Rick Gelhausen, Liam Cassidy, Tim Habenicht, Miriam Gutt, Lisa Hellwig, Rolf Backofen, Andreas Tholey, Cynthia M. Sharma, Ruth A. Schmitz   +11 more
doaj   +1 more source