Results 51 to 60 of about 2,301 (208)
An ancient pathway combining carbon dioxide fixation with the generation and utilization of a sodium ion gradient for ATP synthesis [PDF]
, 2012 Synthesis of acetate from carbon dioxide and molecular hydrogen is considered to be the first carbon assimilation pathway on earth. It combines carbon dioxide fixation into acetyl-CoA with the production of ATP via an energized cell membrane.
Bertsch, Johannes +13 more
core +4 more sources
Expansion of cagA Copy Number in Helicobacter pylori During Co‐Infection in a Mouse Model
Helicobacter, Volume 30, Issue 6, November/December 2025.ABSTRACT Introduction The virulence factor CagA is critical in mediating inflammation, and Helicobacter pylori PMSS1 dynamically modulates cagA copy number in response to host immune pressure. Co‐infection with Salmonella enterica serotype Typhimurium has been shown to heighten systemic inflammation and reduce H.
Kavinda Tissera +7 more
wiley +1 more source
Polyphenol Oxidase Activity on Guaiacyl and Syringyl Lignin Units
Angewandte Chemie, Volume 136, Issue 48, November 25, 2024.The conversion of lignin‐derived guaiacyl (G) and syringyl (S) compounds into methoxy‐ortho‐diphenols through oxidative ortho‐hydroxylation and ortho‐demethoxylation reactions catalyzed by novel fungal polyphenol oxidases (PPOs) is presented. The formation of o‐diphenols rather than reactive quinones can be steered by the addition of a reductant. These
Caio de O. G. Silva +7 more
wiley +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
Journal of the Science of Food and Agriculture, Volume 105, Issue 10, Page 5239-5245, 15 August 2025.Abstract BACKGROUND Fermenting soy milk with lactic acid bacteria is challenging. Generally, carbohydrates are added to enhance the acid production in soy milk. However, the yoghurt starter Lactobacillus delbrueckii subsp. bulgaricus did not succeed in fermenting soy milk supplemented with carbohydrates.
Harutoshi Tsuda +2 more
wiley +1 more source
Microbial Biotechnology, Volume 18, Issue 6, June 2025.Molecular and functional experiments highlight the relevance of species‐specific polymorphisms in a B12 riboswitch of the Mycobacterium genus. This information provided proof‐of‐concept to engineer a whole‐cell biosensor capable of detecting vitamin B12. ABSTRACT Vitamin B12 metabolism differs among members of the Mycobacterium genus.
Elena Campos‐Pardos +6 more
wiley +1 more source
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 +6 more
wiley +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 +2 more
wiley +1 more source
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 +2 more
wiley +1 more source
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 +8 more
wiley +1 more source