Results 61 to 70 of about 8,239 (202)

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

Co-digestion of food waste and hydrothermal liquid digestate: Promotion effect of self-generated hydrochars

open access: yesEnvironmental Science and Ecotechnology, 2023
Hydrothermal treatment (HTT) can efficiently valorize the digestate after anaerobic digestion. However, the disposal of the HTT liquid is challenging. This paper proposes a method to recover energy through the anaerobic co-digestion of food waste and HTT
Mingshuai Shao   +6 more
doaj   +1 more source

Clumped isotopes as fingerprints of microbial methane production pathways in marine sediments

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 1, January 2026.
Abstract Microbial methanogenesis in marine sediments produces significant amounts of methane from various substrates; however, identifying the active pathways in situ remains challenging. While the bulk and clumped isotopic signatures of methane from different pathways have been studied in pure cultures, these are difficult to compare with complex ...
Anna J. Wallenius   +5 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

Drastic suppression of benthic nitrogen fixation by restructuring diazotrophic communities following tidal wetland conversion to aquaculture ponds

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 1, January 2026.
Abstract Tidal wetland reclamation is a widespread anthropogenic disturbance that alters sediment biogeochemistry; however, its impacts on biological nitrogen fixation (BNF) and diazotrophic communities remain poorly understood. Here, we integrated 15N isotope labeling, metagenomic sequencing, and network analysis across a bare tidal flat (B), moderate‐
Can Wang   +11 more
wiley   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, Volume 599, Issue 23, Page 3417-3443, December 2025.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
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

Changes in concentrations of coenzyme F420 analogs during batch growth of Methanosarcina barkeri and Methanosarcina mazei [PDF]

open access: yesApplied and Environmental Microbiology, 1989
Coenzyme F420 has been assayed by high-performance liquid chromatography with fluorimetric detection; this permits quantification of individual coenzyme F420 analogs whilst avoiding the inclusion of interfering material. The total intracellular coenzyme F420 content of Methanosarcina barkeri MS cultivated on methanol and on H2-CO2 and of Methanosarcina
openaire   +2 more sources

Habitat Diversity Sustains Ecosystem Functioning in Plateau Arid‐Region Wetlands

open access: yesEcology and Evolution, Volume 15, Issue 12, December 2025.
Habitat diversity underpins both biodiversity and functional biogeochemical processes in plateau arid‐region wetlands, thereby stabilizing ecosystem functioning. These functionally complementary habitats collectively drive critical ecosystem processes.
Chenyu Wang   +9 more
wiley   +1 more source

A Proteasome from the Methanogenic Archaeon Methanosarcina thermophila [PDF]

open access: yesJournal of Biological Chemistry, 1995
A 645-kDa proteasome was purified from Methanosarcina thermophila which had chymotrypsin-like and peptidylglutamyl-peptide hydrolase activities and contained alpha (24-kDa) and beta (22-kDa) subunits. Processing of both subunits was suggested by comparison of N-terminal sequences with the sequences deduced from the alpha- and beta-encoding genes (psmA ...
J A, Maupin-Furlow, J G, Ferry
openaire   +2 more sources

Home - About - Disclaimer - Privacy