Results 31 to 40 of about 1,224 (179)

Side Chains of Cobalt Corrinoids Control the Sensitivity and Selectivity in the Colorimetric Detection of Cyanide

, 2016
Substitution of CoIII-bound water by cyanide allows the rapid colorimetric detection of micromolar amounts of cyanide with cobalt corrinoids. Negatively charged side chains at the periphery of these metal-based sensors increase the selectivity of cyanide
Christine Männel-Croisé (2392318), Felix Zelder (1839874)   +1 more
core   +1 more source

FAD binding, cobinamide binding and active site communication in the corrin reductase (CobR) [PDF]

, 2014
Adenosylcobalamin, the coenzyme form of vitamin B12, is one Nature's most complex coenzyme whose de novo biogenesis proceeds along either an anaerobic or aerobic metabolic pathway. The aerobic synthesis involves reduction of the centrally chelated cobalt
Pickersgill, Richard W., Pickersgill, Richard W, Howard, Mark J., Mark J. Howard, Alan Scott, Christopher M. Johnson, Stephen E. J. Rigby, Rigby, Stephen E J, Lawrence, Andrew D., Taylor, Samantha L., Rigby, Stephen E.J., Andrew D. Lawrence, Rowe, Michelle L., Scott, Alan, Samantha L. Taylor, Johnson, Christopher M, Michelle L. Rowe, Taylor, Samantha L, Rigby, Stephen E. J., Geeves, Michael A., Richard W. Pickersgill, Warren, Martin J., Johnson, Christopher M., Michael A. Geeves, Martin J. Warren   +24 more
core   +1 more source

Novel Pathway for Corrinoid Compounds Production in Lactobacillus [PDF]

Frontiers in Microbiology, 2018
La vitamina B12 o cobalamina es un metabolito esencial para los seres humanos, lo que lo convierte en un compuesto interesante para muchos grupos de investigación que se centran en diferentes vías de síntesis de cepas productoras. En este trabajo, informamos la influencia de intermediarios clave para la síntesis de cobalamina añadida al medio de ...
Andrea Carolina Torres, Verónica Vannini, Graciela Font, Lucila Saavedra, María Pía Taranto   +4 more
openaire   +4 more sources

Methanol Metabolism in the Cytochrome and Menaquinone‐Containing Acetogen Moorella thermoacetica

Environmental Microbiology, Volume 28, Issue 7, July 2026.
The thermophilic acetogenic bacterium Moorella thermoacetica is a promising platform organism to convert C1 compounds to valuable products. Gaseous C1 substrates are technically difficult to use for fermentation in an industrial scale, but methanol, which can be produced chemically from carbon dioxide, is a suitable alternative.
Florian P. Rosenbaum, Anja Poehlein, Rolf Daniel, Volker Müller   +3 more
wiley   +1 more source

Combined C and Cl Isotope Effects Indicate Differences between Corrinoids and Enzyme (Sulfurospirillum multivorans PceA) in Reductive Dehalogenation of Tetrachloroethene, But Not Trichloroethene

, 2016
The role of the corrinoid cofactor in reductive dehalogenation catalysis by tetrachloroethene reductive dehalogenase (PceA) of Sulfurospirillum multivorans was investigated using isotope analysis of carbon and chlorine.
Martin Elsner (1564447), Torsten Schubert (332125), Sebastian Keller (591924), Julian Renpenning (1531390), Stefan Cretnik (1733233), Ivonne Nijenhuis (1625083), Orfan Shouakar-Stash (1704574)   +6 more
core   +1 more source

Isolation and characterization of the Co-methyl and Co-aquo derivative of 5-hydroxybenzimidazolylcobamide (factor III) from Methanosarcina barkeri grown on methanol [PDF]

, 1983
The Co-methyl and the Co-aquo derivative of 5-hydroxybenzimidazolylcobamide (factor III) were isolated as the major natural corrinoids from Methanosarcina barkeri ‘Fusaro’. They were characterized by their UV/VIS-spectra, their chromatographic behaviour,
Höllriegl, Ver, Paul Scherer, Paul Renz, Renz, Paul, Renz, P., Scherer, Paul, Ver Höllriegl, Höllriegel, V.   +7 more
core   +1 more source

Microbial Electrosynthesis Reshapes Energy Metabolism and Physiology in Clostridium ljungdahlii

Microbial Biotechnology, Volume 19, Issue 6, June 2026.
Microbial electrosynthesis drives Clostridium ljungdahlii into a distinct stress‐associated physiological state, different from gas fermentation. Comparative multi‐omics and electron microscopy reveal physiological constraints that help explain the poor performance of MES.
Sara Al Sbei, Santiago T. Boto, Thomas Krüger, Kai Papenfort, Martin Westermann, Aurélie Jost, Falk Harnisch, Axel A. Brakhage, Miriam A. Rosenbaum   +8 more
wiley   +1 more source

Combined C and Cl isotope effects indicate differences between corrinoids and enzyme (Sulfurospirillum multivorans PceA) in reductive dehalogenation of tetrachloroethene, but not trichloroethene.

, 2014
The role of the corrinoid cofactor in reductive dehalogenation catalysis by tetrachloroethene reductive dehalogenase (PceA) of Sulfurospirillum multivorans was investigated using isotope analysis of carbon and chlorine.
Shouakar-Stash, O., Elsner, M., Cretnik, S., Nijenhuis, I., Keller, S., Schubert, T., Renpenning, J.   +6 more
core   +1 more source

How corrinoids are synthesized without oxygen: nature's first pathway to vitamin B12 [PDF]

, 1997
Background: During the biosynthesis of vitamin B12, the aerobic bacterium Pseudomonas denitrificans uses two enzymes, CobG and CobJ, to convert precorrin-3 to the ring-contracted intermediate, precorrin-4.
Holderman, Marc T., Scott, A.Ian, Roessner, Charles A., Santander, Patricio J., Stolowich, Neal J.   +4 more
core   +1 more source

Genomic and Transcriptomic Insights Into the Autotrophic Metabolism on H2 + CO2 or CO of the Thermophilic Acetogenic Model Organism Moorella thermoacetica

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, Anja Poehlein, Rolf Daniel, Volker Müller   +3 more
wiley   +1 more source