Results 31 to 40 of about 2,317 (220)
Ring contraction of hydroporphinoid to corrinoid complexes [PDF]
Proceedings of the National Academy of Sciences, 1981 Crystalline nickel(II) and dicyanocobalt(III) complexes of a racemic 1,2,2,7,7,12,12,17,17,20-decamethyl-20-hydroxy-1,2,3,7,8,12,13,20-octahydro- 17 H -porphyrin rearrange to the corresponding complexes of racemic 19-acetyl-1,2,2,7,7,12,12,17,17-nonamethyl- trans -corrin on melting ...
V, Rasetti +3 more
openaire +2 more sources
Theoretical Modeling of Low-Energy Electronic Absorption Bands in Reduced Cobaloximes [PDF]
, 2014 The reduced Co^I states of cobaloximes are powerful nucleophiles that play an important role in the hydrogen-evolving catalytic activity of these species.
Arantes, Guilherme M. +9 more
core +4 more sources
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
Environmental Microbiology, Volume 28, Issue 4, April 2026.Moorella thermoacetica is the model organism for elucidation of acetogenesis. The reduction of CO2 to acetate is well studied, but how redox carrier balancing and energy conservation are maintained during autotrophic growth and how H2 is oxidised remains enigmatic.
Florian P. Rosenbaum +3 more
wiley +1 more source
Basal gnathostomes provide unique insights into the evolution of vitamin B12 binders [PDF]
, 2014 © The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Genome Biology and Evolution 7 (2015): 457-464, doi:10.1093/gbe/evu289.The uptake and transport of ...
Aluru, Neelakanteswar +5 more
core +1 more source
Environmental Microbiology, Volume 28, Issue 3, March 2026.Two novel thermophilic bacteria, Thermincola strain AZ34E and Carboxydocella strain AZ29I, were isolated from hydrothermal environments and shown to oxidise carbon monoxide via the water‐gas shift reaction. Comparative genomic and phylogenetic analyses revealed that all currently described isolates within Thermincola and Carboxydocella each represent a
Anastasia Galani +3 more
wiley +1 more source
Uneven distribution of cobamide biosynthesis and dependence in bacteria predicted by comparative genomics. [PDF]
, 2019 The vitamin B12 family of cofactors known as cobamides are essential for a variety of microbial metabolisms. We used comparative genomics of 11,000 bacterial species to analyze the extent and distribution of cobamide production and use across bacteria ...
Haft, David R +6 more
core +1 more source
Environmental Microbiology Reports, Volume 18, Issue 1, February 2026.This work presents the physiological exploration of the halo‐alkaliphilic, carboxydotrophic acetogen bacterium MD4. In contrast to well‐characterised neutrophilic and slightly acidophilic acetogenic carboxydotrophs, this work shows an important role for formate production, instead of ethanol, as a redox exhaust mechanism in alkaline conditions ...
Martijn Diender +5 more
wiley +1 more source
Measuring and tracking vitamin B12: a review of current methods with a focus on optical spectroscopy [PDF]
, 2017 Published online: 13 Sep 2016Vitamin B12 deficiency has been associated with an increased risk of cognitive decline. This literature review explores the current methods available for measuring vitamin B12 in human blood, serum, and urine, and the need ...
Brooks, J. +3 more
core +1 more source
A Cytochrome c‐Containing Periplasmic Nitrate Reductase in the Acetogen Sporomusa ovata
Environmental Microbiology, Volume 28, Issue 1, January 2026.Sporomusa ovata, a cytochrome‐containing, acetogenic bacterium, conserves energy by reduction of carbon dioxide to acetate. Nitrate serves as additional electron acceptor and is reduced to ammonium, resulting in increased growth and reduced acetate production.
Lara M. Waschinger +4 more
wiley +1 more source