Results 51 to 60 of about 5,305 (249)
Gut microbes, 2019 Vitamin B12 is a critical nutrient for humans as well as microbes. Due to saturable uptake, high dose oral B12 supplements are largely unabsorbed and reach the distal gut where they are available to interact with the microbiota. The aim of this study was
Caleb J. Kelly +12 more
semanticscholar +1 more source
Frontiers in Microbiology, 2023 IntroductionDesulfitobacterium hafniense was isolated for its ability to use organohalogens as terminal electron acceptors via organohalide respiration (OHR). In contrast to obligate OHR bacteria, Desulfitobacterium spp.
Mathilde Stéphanie Willemin +4 more
doaj +1 more source
Isolation and characterization of a novel methanogen Methanosarcina hadiensis sp. nov. from subsurface Boom Clay pore water. [PDF]
Environ MicrobiolWe isolated a novel methanogenic archaeon, Methanosarcina hadiensis sp. nov. (TD41E1‐1), from Boom Clay pore water at a depth of 225 m. It exhibits unique characteristics compared to previously characterized Methanosarcina species, such as the inability to perform acetoclastic methanogenesis and the presence of extensive surface appendages.
Giménez FJ +4 more
europepmc +2 more sources
MICROBIAL DEGRADATION OF CORRINOIDS III [PDF]
Journal of Bacteriology, 1964 Burgus, R. C. (Wayne State University, Detroit, Mich.), J. B. Hufham, W. M. Scott, and J. J. Pfiffner . Microbial degradation of corrinoids. III. Pigments derived from vitamin B 12 by Pseudomonas rubescens . J. Bacteriol.
R. C. Burgus +3 more
openaire +1 more source
Protein Science, 2019 Corrinoids are essential cofactors of enzymes involved in the C1 metabolism of anaerobes. The active, super‐reduced [CoI] state of the corrinoid cofactor is highly sensitive to autoxidation. In O‐demethylases, the oxidation to inactive [CoII] is reversed
Hendrike Dürichen +2 more
semanticscholar +1 more source
Die Demethylierung von Dimethylselenid ist eine adaptive Antwort des Archaeons Methanococcus voltae [PDF]
, 2004 Im natürlichen Lebensraum von Methanococcus voltae kommt Selen in unterschiedlichen Verbindungen und Konzentration vor. So variiert der Selengehalt im Mündungswasser verschiedener Flüsse zwischen 0,1 und 63 nM.
Niess, Ulf Michael, Prof. Dr. A. Klein
core +1 more source
Communications Chemistry, 2018 Synthetically established methods for methylation of phenols and demethylation of methyl phenyl ethers rely in general on hazardous reagents or/and harsh reaction conditions and are irreversible.
Judith E. Farnberger +7 more
semanticscholar +1 more source
Molecules, 2020 Nitrile hydratases (NHase) catalyze the hydration of nitriles to the corresponding amides. We report on the heterologous expression of various nitrile hydratases.
Birgit Grill +7 more
doaj +1 more source
Receptor uptake arrays for vitamin B12, siderophores and glycans shape bacterial communities
, 2017 Molecular variants of vitamin B12, siderophores and glycans occur. To take up variant forms, bacteria may express an array of receptors. The gut microbe Bacteroides thetaiotaomicron has three different receptors to take up variants of vitamin B12 and 88 ...
Frank, Steven A.
core +1 more source
Insights into the Ecological Roles and Evolution of Methyl-Coenzyme M Reductase-Containing Hot Spring Archaea [PDF]
, 2019 Several recent studies have shown the presence of genes for the key enzyme associated with archaeal methane/alkane metabolism, methyl-coenzyme M reductase (Mcr), in metagenome-assembled genomes (MAGs) divergent to existing archaeal lineages.
Chen, Ya-Ting +17 more
core +3 more sources