Results 51 to 60 of about 2,317 (220)

Lettuce fortification through vitamin B12‐producing bacteria – proof of concept study

Journal of the Science of Food and Agriculture, Volume 105, Issue 6, Page 3343-3354, April 2025.
Abstract BACKGROUND Vitamin B12 (cobalamin) can be produced de novo only by certain bacteria and archaea. It plays a crucial role in the health of animals and humans, which obtain it only through diet, mainly from animal products. This study aimed to identify endophytic bacterial strains capable of synthesizing vitamin B12 and enriching edible plants ...
Sara Pipponzi, Stefanie Primisser, Livio Antonielli, Emilio Stefani, Stephane Compant, Angela Sessitsch, Tanja Kostic   +6 more
wiley   +1 more source

Redox, haem and CO in enzymatic catalysis and regulation [PDF]

, 2012
The present paper describes general principles of redox catalysis and redox regulation in two diverse systems. The first is microbial metabolism of CO by the Wood–Ljungdahl pathway, which involves the conversion of CO or H2/CO2 into acetyl-CoA, which ...
Bender, Güneş, Bianchetti, Christopher M., Britt, R. David, Cramer, Stephen P., Doukov, Tzanko I., Drennan, Catherine L., George, Simon J., Gupta, Nirupama, Jakob, Ursula, Jenkins, Paul M., Kung, Yan, Leichert, Lars, Martens, Jeffrey R., Phillips, George N., Ragsdale, Stephen W., Stich, Troy A., Yan, Lifen, Yi, Li   +17 more
core   +1 more source

Methanol and Carbon Monoxide Metabolism of the Thermophile Moorella caeni

Environmental Microbiology, Volume 27, Issue 4, April 2025.
An omics approach was used to elucidate the C1 metabolism of Moorella caeni DSM 21394 T, which exhibits acetogenic metabolism on methanol and hydrogenogenic metabolism on CO. Our results suggest that respiratory Complex I serves as the primary respiratory enzyme in methanol‐grown cells.
Nicolas A. Vecchini Santaella, Alfons J. M. Stams, Diana Z. Sousa   +2 more
wiley   +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
Alan Scott, Andrew D. Lawrence, Banerjee, Blanche, Cheng, Cheung, Christopher M. Johnson, Dalhus, Daragan, Debussche, Delaglio, Delaglio, Emsley, Evans, Fogh, Fonseca, Johnson, Kim, Lawrence, Leslie, Lexa, Mark J. Howard, Martin J. Warren, Mera, Michael A. Geeves, Michelle L. Rowe, Monera, Murshudov, Pace, Parsons, Piotto, Rashid, Richard W. Pickersgill, Samantha L. Taylor, Sampson, States, Stephen E. J. Rigby, Stich, Stich, Vagin, van den Heuvel, Vranken, Warren, Webb, Wishart, Wittung-Stafshede   +45 more
core   +3 more sources

Metagenomic Exploration Uncovers Several Novel ‘Candidatus’ Species Involved in Acetate Metabolism in High‐Ammonia Thermophilic Biogas Processes

Microbial Biotechnology, Volume 18, Issue 3, March 2025.
Metagenomic analysis of three thermophilic species was performed to identify key species for stable biogas production at high free ammonia levels (> 0.7 g/L). Potential acetogens and syntrophic acetate‐oxidising bacteria (SAOB) were recovered by looking for genes of the Wood–Ljungdahl pathway and glycine synthase reductase pathway.
George B. Cheng, Erik Bongcam‐Rudloff, Anna Schnürer   +2 more
wiley   +1 more source

Is the Hyporheic Zone Relevant beyond the Scientific Community? [PDF]

, 2019
Rivers are important ecosystems under continuous anthropogenic stresses. The hyporheic zone is a ubiquitous, reactive interface between the main channel and its surrounding sediments along the river network. We elaborate on the main physical, biological,
Arnon, Shai, Banks, Eddie, Batelaan, Okke, Betterle, Andrea, Broecker, Tabea, Coll, Claudia, Drummond, Jennifer D., Garcia, Jaime Gaona, Lewandowski, Jörg, Wolke, Philipp   +9 more
core   +1 more source

Investigating the origins of B12 biosynthesis in the most ancient roots of the tree of life [PDF]

, 2015
Vitamin B12, also known as B12 or cobalamin, is a vital nutrient required across all branches of life, but the ability to synthesize this complex molecule de novo is limited to only a few archaea and bacteria.
Alicea, Edil, Bibis, Stergios S., Celone, Veronica, Jutla, Tripta, Petrus, Amanda K., Swithers, Kristen S.   +5 more
core  

Vitamin B12: prevention of human beings from lethal diseases and its food application

Journal of the Science of Food and Agriculture, Volume 105, Issue 1, Page 10-18, 15 January 2025.
Abstract Vitamin B12, a water‐soluble essential micronutrient, plays a pivotal role in numerous physiological processes in the human body. This review meticulously examines the structural complexity and the diverse mechanisms through which vitamin B12 exerts its preventive effects against a spectrum of health conditions, including pernicious anaemia ...
S Harikrishnan, Deepika Kaushik, Mukul Kumar, Jasjit Kaur, Emel Oz, Charalampos Proestos, Tahra Elobeid, Omur Fatih Karakullukcu, Fatih Oz   +8 more
wiley   +1 more source

Microbial demethylation of dimethylsulfoniopropionate and methylthiopropionate [PDF]

, 2000
As discussed in chapter 1 , there is an increased interest in the production of certain natural sulfur-containing flavor compounds or flavor precursors.
Jansen, Michael,
core   +3 more sources

Identification of abiotic and biotic reductive dechlorination in a chlorinated ethene plume after thermal source remediation by means of isotopic and molecular biology tools [PDF]

, 2016
Thermal tetrachloroethene (PCE) remediation by steam injection in a sandy aquifer led to the release of dissolved organic carbon (DOC) from aquifer sediments resulting in more reduced redox conditions, accelerated PCE biodegradation, and changes in ...
Badin, Alice, Broholm, Mette M, Dennis, Philip, Hunkeler, Daniel, Jacobsen, Carsten S, Palau, Jordi   +5 more
core   +2 more sources