Results 71 to 80 of about 16,954 (214)
Abstract BACKGROUND Landfill gas (LFG) and leachate are commonly treated separately through energy‐intensive processes. This study evaluated the integration of both streams in an anaerobic biotrickling filter (BTF) to achieve simultaneous methane (CH4) and carbon dioxide (CO2) removal coupled with ammonium (NH4+) transformation, and how the microbial ...
Cecilia Lizeth Alvarez‐Guzmán +3 more
wiley +1 more source
Generation of a transmembrane gradient of Na+ in Methanosarcina barkeri [PDF]
A transmembrane Na+ gradient was generated by Methanosarcina barkeri during methanogenesis. The intracellular Na+ concentration amounted to approximately one fifth of the extracellular one. A secondary Na+/H+ antiport system was shown to be responsible for Na+ extrusion. This system could be inhibited by amiloride.
V, Müller, M, Blaut, G, Gottschalk
openaire +2 more sources
Co-occurrence of Methanosarcina mazei and Geobacteraceae in an iron(III)-reducing enrichment culture
Methanosaeta harundinacea and Methanosarcina barkeri, known as classic acetoclastic methanogens, are capable of directly accepting electrons from Geobacter metallireducens for the reduction of carbon dioxide to methane, having been revealed as direct ...
Shiling eZheng +8 more
doaj +1 more source
High-rate, High Temperature Acetotrophic Methanogenesis Governed by a Three Population Consortium in Anaerobic Bioreactors. [PDF]
A combination of acetate oxidation and acetoclastic methanogenesis has been previously identified to enable high-rate methanogenesis at high temperatures (55 to 65°C), but this capability had not been linked to any key organisms.
Dang Ho +5 more
doaj +1 more source
Enhancement of bioconversion of coal to methane by graphene
The research of enhancing biomethanation of coal has been paid much attention, which is an effective measure for increasing coalbed methane production.
Yixuan ZHOU +5 more
doaj +1 more source
Satellites in the prokaryote world [PDF]
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
Characterization of anhydromevalonate phosphate decarboxylase, the UbiD‐family decarboxylase involved in the archaeal mevalonate pathway, was conducted. The enzyme is responsible for the biosynthesis of isoprenoids, such as archaeal membrane lipids, respiratory quinones, and dolichols.
Rino Ishikawa +9 more
wiley +1 more source
A Proteasome from the Methanogenic Archaeon Methanosarcina thermophila [PDF]
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
Background The final step in the anaerobic decomposition of biopolymers is methanogenesis. Rice field soils are a major anthropogenic source of methane, with straw commonly used as a fertilizer in rice farming.
Xin Li +4 more
doaj +1 more source
Small protein MtrR is a regulator of the Mtr methyltransferase complex in Methanosarcina mazei. It binds specifically to the MtrA subunit and modulates Mtr activity in response to hydrogen (H2) availability. Deleting mtrR impairs growth in the presence but not absence of H2, indicating its role in directing methyl transfer toward an energy‐conserving ...
Tim Habenicht +6 more
wiley +1 more source

