Results 61 to 70 of about 1,224 (179)

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

open access: yesJournal 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   +6 more
wiley   +1 more source

Methanol and Carbon Monoxide Metabolism of the Thermophile Moorella caeni

open access: yesEnvironmental 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   +2 more
wiley   +1 more source

Coordination of nitrogenous bases by Co corrinoids and Fe porphyrins. [PDF]

open access: yes, 2018
The ligand binding properties of the Fe(III) Porphyrin microperoxidase-8 (MP-8) and several Co(III) Corrinoids towards nitrogenous bases have been studied.
Hamza, Mohamed Samir Amin.
core  

Human Gut Microbes Use Multiple Transporters to Distinguish Vitamin B12 Analogs and Compete in the Gut [PDF]

open access: yes, 2014
SummaryGenomic and metagenomic sequencing efforts, including human microbiome projects, reveal that microbes often encode multiple systems that appear to accomplish the same task.
Barry, Natasha A.   +9 more
core   +1 more source

Corrinoid Cross-Feeding in the Microbial World [PDF]

open access: yes, 2014
The exchange of metabolites among members of microbial communities enables the catabolism of complex substrates and supports the growth of auxotrophic microbes.
Dirks, Erica Christine
core   +1 more source

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

open access: yesMicrobial 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   +2 more
wiley   +1 more source

Studies on the Corrinoids and Porphyrins in Streptomycetes

open access: yesAgricultural and Biological Chemistry, 1968
A corrinoid, formed predominantly in the cells of Streptomyces olivaceus 605 grown aerobically on a glucose-lactose medium, was identical with 5,6-dimethylbenzimidazolyl-cobamide coenzyme (DBC coenzyme) by paper chromatography, paper ionophoresis, absorption spectrophotometry, assay of the coenzyme activity in diol dehydratase system and other tests ...
Kazuyoshi SATO   +2 more
openaire   +5 more sources

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

open access: yesJournal 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   +8 more
wiley   +1 more source

On the influence of cobamides on organohalide respiration and mercury methylation [PDF]

open access: yes, 2019
Corrinoids are metallic cofactors that serve as prosthetic groups for numerous reactions catalyzed by various microorganisms, ranging from carbon and nitrogen cycling to toxic waste remediation.
Jiang, Nannan
core  

Sustainable Growth of Dehalococcoides mccartyi 195 by Corrinoid Salvaging and Remodeling in Defined Lactate-Fermenting Consortia [PDF]

open access: yes, 2014
Corrinoids are essential cofactors of reductive dehalogenases in Dehalococcoides mccartyi, an important bacterium in bioremediation, yet sequenced D. mccartyi strains do not possess the complete pathway for de novo corrinoid biosynthesis.
Yi, Shan   +5 more
core   +1 more source

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