Results 81 to 90 of about 7,497 (290)

The Nitrate Assimilatory Pathway in Sinorhizobium meliloti: Contribution to NO Production

Frontiers in Microbiology, 2019
The interaction between rhizobia and their legume host plants culminates in the formation of specialized root organs called nodules in which differentiated endosymbiotic bacteria (bacteroids) fix atmospheric nitrogen to the benefit of the plant ...
Bryan Ruiz, Alexandre Le Scornet, Laurent Sauviac, Antoine Rémy, Claude Bruand, Eliane Meilhoc   +5 more
doaj   +1 more source

Tungstoenzymes: Occurrence, Catalytic Diversity and Cofactor Synthesis

Inorganics, 2020
Tungsten is the heaviest element used in biological systems. It occurs in the active sites of several bacterial or archaeal enzymes and is ligated to an organic cofactor (metallopterin or metal binding pterin; MPT) which is referred to as tungsten ...
Carola S. Seelmann, Max Willistein, Johann Heider, Matthias Boll   +3 more
doaj   +1 more source

Silver inhibition on recombinant flavin reductase from Citrobacter freundii A1 [PDF]

, 2012
In this study, the flavin reductase (Fre) of Citrobatter freundii A1 was expressed in E. coli DH5a host with 1 mM IPTG induction. This recombinant protein was fused to 6xHis-tag, thus promising easier IMAC purification of the expressed enzyme.
Mamat, Nor Sasha Izana
core  

Effect of carbon substrate and aeration on nitrate reduction and expression of the periplasmic and membrane-bound nitrate reductases in carbon-limited continuous cultures of Paracoccus denitrificans Pd1222

, 1997
The expression and in situ activity of the membrane-bound and periplasmic nitrate reductases have been assayed in Paracoccus denitrificans Pd1222 grown under a range of aeration regimes in malate-limited or butyrate-limited chemostat cultures.
David J. Richardson, Spiro, Stephen, Heather J. Sears, Stephen Spiro, Sears, Heather J., Richardson, David J.   +5 more
core   +1 more source

Biomimetic Nanoplatform for Dual Target Nano‐Metabolic Therapy in Diabetes‐Associated Biofilm Infections

Advanced Science, EarlyView.
A biomimetic GOx/Arg‐loaded nanoplatform produces nitric oxide through an in situ catalytic cascade reaction, enabling dual‐target metabolic regulation in diabetes‐associated biofilm infections. Bacterial metabolism is disrupted, and macrophage immunometabolism is reprogrammed, resulting in biofilm eradication, immune restoration, and enhanced ...
Mingzhang Li, Yonglong Li, Jiren Yan, Changming Wang, Jinlong Yu, Feng Jiang, Boyong Wang, Yi Yang, Deyi Ding, Jin Tang, Pei Han, Botao Song, Geyong Guo, Hao Shen   +13 more
wiley   +1 more source

Functional diversity in nutrient acquisition by ectomycorrhizal fungi [PDF]

, 2008
Nutrient uptake by boreal forest trees depends upon the symbiotic ectomycorrhizal (ECM) fungi that colonise more than 95% of the fine roots. In these ecosystems, nitrogen (N) is the most important growth-limiting nutrient for plants, followed by ...
Nygren, Cajsa
core  

Uncovering Cystic Fibrosis Carrier: Insights From a Heterozygous CFTR‐F508del Rabbit Model

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Chronic rhinosinusitis (CRS) is a heterogeneous inflammatory disorder frequently associated with impaired mucociliary clearance and bacterial infection. Individuals carrying a single cystic fibrosis transmembrane conductance regulator (CFTR) mutation exhibit partial CFTR dysfunction and are increasingly recognized as being at risk ...
Do‐Yeon Cho, Alexis E. McFeely, Daniel Skinner, Shaoyan Zhang, Justin Hedvat, Weslee Ping‐ay, Daniel M. Beswick, Justin H. Turner, Bradford A. Woodworth, Jie Xu   +9 more
wiley   +1 more source

Microbial Community and in situ Bioremediation of Groundwater by Nitrate Removal in the Zone of a Radioactive Waste Surface Repository

Frontiers in Microbiology, 2018
The goal of the present work was to investigate the physicochemical and radiochemical conditions and the composition of the microbial community in the groundwater of a suspended surface repository for radioactive waste (Russia) and to determine the ...
Alexey V. Safonov, Alexey V. Safonov, Tamara L. Babich, Diyana S. Sokolova, Denis S. Grouzdev, Tatiyana P. Tourova, Andrey B. Poltaraus, Elena V. Zakharova, Elena V. Zakharova, Alexander Y. Merkel, Alexander P. Novikov, Tamara N. Nazina, Tamara N. Nazina   +12 more
doaj   +1 more source

Denitrification, activity of bacterial flocs, and growth of a filamentous bacterium in relation with the bulking of activated sludge

, 1978
Activated sludge with poor settling characteristics is caught under the term "bulking" sludge. Various types of bulking activated sludge can be distinguished.1) Sludge containing an abundance of filamentous microorganisms.2) Sludge, characterized by ...
Krul, J.M.
core  

Nitrogen transformation pathways, rates, and isotopic signatures in Lake Lugano [PDF]

, 2014
The consequences of detrimental alterations caused to the natural nitrogen (N) cycle are manifold. To tackle problems, such as eutrophication of coastal marine and lacustrine environments, or increasing emissions of greenhouse gas nitrous oxide (N2O ...
Wenk, Christine B.
core   +1 more source