Results 81 to 90 of about 16,801 (196)

The active microbial community more accurately reflects the anaerobic digestion process: 16S rRNA (gene) sequencing as a predictive tool [PDF]

open access: yes, 2018
Background: Amplicon sequencing methods targeting the 16S rRNA gene have been used extensively to investigate microbial community composition and dynamics in anaerobic digestion.
de Vrieze, Jo   +3 more
core   +2 more sources

Robust Performance of Sub‐Thermophilic Anaerobic Digestion Enabled by Microbial Functional Redundancy

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
We tested whether anaerobic digesters could operate at lower temperatures without losing methane production. Pilot‐scale reactors were run at 48°C or 55°C. Methane yields and gas quality were similar. Lower temperatures reduced volatile fatty acids and supported more diverse microbial communities.
Richard K. Tennant   +10 more
wiley   +1 more source

Energy Conservation via Hydrogen Cycling in the Methanogenic Archaeon Methanosarcina barkeri

open access: yesmBio, 2018
Energy conservation via hydrogen cycling, which generates proton motive force by intracellular H2 production coupled to extracellular consumption, has been controversial since it was first proposed in 1981.
Gargi Kulkarni   +2 more
doaj   +1 more source

Resonance Raman analysis of intracellular vitamin B12 analogs in methanogenic archaea

open access: yesAnalytical Science Advances, 2022
Methanogenic archaea (methanogens) are microorganisms that can synthesize methane. They are found in diverse environments ranging from paddy fields to animal digestive tracts to deep‐sea hydrothermal vents.
Nanako Kanno   +4 more
doaj   +1 more source

Satellites in the prokaryote world [PDF]

open access: yes, 2019
Background Satellites or tandem repeats are very abundant in many eukaryotic genomes. Occasionally they have been reported to be present in some prokaryotes, but to our knowledge there is no general comparative study on their occurrence.
Messeguer Peypoch, Xavier   +1 more
core   +2 more sources

Epixylic microbial communities as key regulators of methane emissions from submerged wood in a tropical hydroelectric reservoir

open access: yesLimnology and Oceanography, Volume 71, Issue 3, March 2026.
Abstract Tropical hydroelectric reservoirs are recognized hotspots for greenhouse gas emissions, yet the role of submerged forests in these emissions remains poorly understood. In this study, we investigated the contribution of standing dead trees and their associated epixylic biofilms to methane (CH4) and carbon dioxide (CO2) emissions in the ...
Fanny Colas   +12 more
wiley   +1 more source

Structure and haem-distal site plasticity in Methanosarcina acetivorans protoglobin. [PDF]

open access: yesPLoS ONE, 2013
Protoglobin from Methanosarcina acetivorans C2A (MaPgb), a strictly anaerobic methanogenic Archaea, is a dimeric haem-protein whose biological role is still unknown.
Alessandra Pesce   +11 more
doaj   +1 more source

Incomplete Wood-Ljungdahl pathway facilitates one-carbon metabolism in organohalide-respiring Dehalococcoides mccartyi. [PDF]

open access: yes, 2014
The acetyl-CoA "Wood-Ljungdahl" pathway couples the folate-mediated one-carbon (C1) metabolism to either CO2 reduction or acetate oxidation via acetyl-CoA.
Alvarez-Cohen, Lisa   +8 more
core   +1 more source

Predicting compatibility between ferredoxins and the Fe protein of nitrogenase using in silico protein modeling

open access: yesProtein Science, Volume 35, Issue 3, March 2026.
Abstract Biological nitrogen fixation is the process by which certain bacteria and archaea use the enzyme nitrogenase to reduce atmospheric nitrogen into bioavailable ammonium. Engineering non‐nitrogen‐fixing organisms, like plants, to use nitrogenase could reduce dependency on synthetic fertilizer and mitigate the environmental impacts of industrial ...
Adity Biswas   +2 more
wiley   +1 more source

The Methanosarcina barkeri genome: comparative analysis with Methanosarcina acetivorans and Methanosarcina mazei reveals extensive rearrangement within methanosarcinal genomes.

open access: yesJournal of bacteriology, 2006
We report here a comparative analysis of the genome sequence of Methanosarcina barkeri with those of Methanosarcina acetivorans and Methanosarcina mazei. The genome of M. barkeri is distinguished by having an organization that is well conserved with respect to the other Methanosarcina spp.
Maeder, Dennis L.   +10 more
openaire   +3 more sources

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