Results 101 to 110 of about 10,170 (250)

Phenylalanyl-tRNA synthetase from the archaebacterium Methanosarcina barkeri.

Journal of Biological Chemistry, 1984
Phenylalanyl-tRNA synthetase from the archaebacterium Methanosarcina barkeri was purified 1620-fold with 24% overall yield. It appears to be a tetrameric enzyme with a molecular mass of 270 kDa, as determined by gel filtration, with a subunit structure of alpha 2 beta 2 (alpha = 63 kDa, beta = 70 kDa), as determined by sodium dodecyl sulfate gel ...
R, Rauhut, H J, Gabius, W, Kühn, F, Cramer   +3 more
openaire   +2 more sources

ModE Regulates Alternative Nitrogenase Expression in the Methanogen Methanosarcina acetivorans

Molecular Microbiology, Volume 124, Issue 2, Page 105-114, August 2025.
During nitrogen fixation, the methanogen Methanosarcina acetivorans produces the alternative vanadium‐nitrogenase and iron‐nitrogenase only when molybdenum is unavailable to support the activity of molybdenum‐nitrogenase. Our work demonstrates that the expression of the alternative nitrogenases in M.
Melissa Chanderban, Daniel J. Lessner
wiley   +1 more source

Formation of factor 390 by cell extracts of Methanosarcina barkeri

Journal of Bacteriology, 1991
Cell extracts of Methanosarcina barkeri converted coenzyme F420 in an ATP-dependent reaction to the adenylylated derivative factor 390. Although it was reported previously (L. M. Gloss and R. P. Hausinger, BioFactors 1:237-240, 1988) that whole cells were unable to perform this conversion, we observed the conversion in 7 of 11 extracts, all of which ...
W M, van de Wijngaard, P, vermey, C, van der Drift   +2 more
openaire   +3 more sources

Non‐Respiratory Extracellular Electron Transfer Competes with Nitrogenase for Electrons in Rhodopseudomonas Palustris

Advanced Science, Volume 12, Issue 25, July 3, 2025.
This study develops a photosynthetic bioelectrochemical nitrogen fixation system for simultaneous nitrogen fixation and current generation using Rhodopseudomonas palustris. Notably, extracellular electron transfer (EET) serves as a redox balancing strategy, suppressing nitrogen fixation by competing with nitrogenase for electrons.
Xuewen Liu, Panqing Qi, Weipeng Fan, Wuyang Liu, Xingjiang Li, Yong Nie, Xiao‐Lei Wu   +6 more
wiley   +1 more source

Effect of model methanogens on the electrochemical activity, stability, and microbial community structure of Geobacter spp. dominated biofilm anodes

npj Biofilms and Microbiomes
Combining anaerobic digestion (AD) and microbial electrochemical technologies (MET) in AD-MET holds great potential. Methanogens have been identified as one cause of decreased electrochemical activity and deterioration of Geobacter spp. biofilm anodes. A
Daniel Dzofou Ngoumelah, Tonje Marita Bjerkan Heggeset, Tone Haugen, Snorre Sulheim, Alexander Wentzel, Falk Harnisch, Jörg Kretzschmar   +6 more
doaj   +1 more source

Link Between Capacity for Current Production and Syntrophic Growth in Geobacter species

Frontiers in Microbiology, 2015
Electrodes are unnatural electron acceptors, and it is yet unknown how some Geobacter species evolved to use electrodes as terminal electron acceptors.
Amelia-Elena eRotaru, Amelia-Elena eRotaru, Trevor eWoodard, Kelly P. Nevin, Derek R Lovley   +4 more
doaj   +1 more source

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

, 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, Bill, Markus, Brisson, Vanessa L, Conrad, Mark E, Feng, Xueyang, Men, Yujie, Tang, Yinjie J, Yi, Shan, Zhuang, Wei-Qin   +8 more
core   +1 more source

Scalable and Integrated Photocatalytic Reactor Systems for Solar‐to‐Fuel Production: Photoredox and Photoreforming Processes

Advanced Energy Materials, Volume 15, Issue 28, July 22, 2025.
Solar fuels and other value‐added chemicals derived from light‐driven reactions are highly desirable. Although advanced photoactive materials have been reported, demonstrations of their feasibility in large‐scale production are needed. Hence, strategies and recent efforts in scaling up photocatalytic reactors and integrating them into comprehensive ...
Hoi Ying Chung, Roong Jien Wong, Hao Wu, Denny Gunawan, Rose Amal, Yun Hau Ng   +5 more
wiley   +1 more source

Selective Immobilization of Aceticlastic Methanogens to Support Material [Translated]†

KONA Powder and Particle Journal, 2014
The effect of electrostatic and hydrophobic properties of microbes in anaerobic sludge on immobilization to support materials was examined.
Toshiyuki Nomura, Takanori Nagao, Akinori Yoshihara, Hayato Tokumoto, Yasuhiro Konishi   +4 more
doaj   +1 more source

The Effects of Varying Levels of Perchlorate on the Metabolism of Methanogens [PDF]

, 2012
The search for life on Mars has been one of the more intriguing pursuits of NASA and astrobiologists over the last fifteen years. With the help of NASA’s Martian landers and orbiters, discoveries about the red planet have narrowed the range of possible
Hearnsberger, Chris
core   +1 more source