Results 121 to 130 of about 558,186 (382)

Hydrogen‐Producing Catalysts Based on Ferredoxin Scaffolds

Advanced Science, EarlyView.
Selected plant‐type ferredoxins that lack their natural [2Fe‐2S] clusters functionally bind a hydrogenase active site cofactor and act as hydrogenases themselves. In combination with photosystem I, the light‐dependent H₂ evolution almost matches the H₂ production rates of the natural system.
Yiting She, Vera Engelbrecht, Jacek Kozuch, Ulf‐Peter Apfel, Sven T. Stripp, Anja Hemschemeier, Thomas Happe   +6 more
wiley   +1 more source

The Iron–Sulfur Cluster of Bacterioferritin‐Associated Ferredoxin (Bfd): a “Biological Fuse” that Prevents Oxidative Damage to Cells?

Angewandte Chemie, EarlyView.
When cellular iron is low, bacterioferritin (Bfr) releases its stored iron through a reductive process dependent on the [2Fe–2S] ferredoxin Bfd. Why accessing stored iron should depend on an iron‐requiring protein when iron is scarce is unclear. Here, we show that the Bfd [2Fe–2S] cluster is sensitive to oxidative stress, suggesting that it may act as ...
Justin M. Bradley, Aiden M. Carter, Zinnia Bugg, Simon C. Andrews, Nick E. Le Brun   +4 more
wiley   +2 more sources

Purification and Characterization of Nitrate Reductase (NAR) from Pseudomonas sp. SH7 Isolate

مجلة مركز بحوث التقنيات الاحيائية, 2010
Sixty five soil samples and fifteen water samples were collected from different places in which previously explosions were occurred in Iraq. Seven isolates showed ability to utilize 0.1mM trinitrotoluene (TNT) and/or 0.2mM glycerol trinitrate (GTN) as a
Shaymaa H. Al-Rajhi, Majed H. Al-Gelawi, Ghazi M. Aziz   +2 more
doaj   +1 more source

Analysis of NPF and NRT transporter families regarding the nitrate nutrition in maritime pine (Pinus pinaster) [PDF]

, 2019
Nitrogen is an essential element for life and the main limiting nutrient for plant growth and development1. The main forms of inorganic nitrogen in soils are nitrate and ammonium, which relative abundances depend on environmental conditions such as ...
Canovas-Ramos, Francisco Miguel, Cañas, Rafael A., Ortigosa, Francisco, Valderrama-Martín, José Miguel, Ávila, Concepción   +4 more
core  

Streptomycin-induced inflammation enhances Escherichia coli gut colonization through nitrate respiration. [PDF]

, 2013
UnlabelledTreatment with streptomycin enhances the growth of human commensal Escherichia coli isolates in the mouse intestine, suggesting that the resident microbial community (microbiota) can inhibit the growth of invading microbes, a phenomenon known ...
Bäumler, Andreas J, Kingsbury, Dawn D, Lopez, Christopher A, Spees, Alanna M, Tsolis, Renée M, Wangdi, Tamding, Winter, Sebastian E, Xavier, Mariana N   +7 more
core   +1 more source

Pseudo-constitutivity of nitrate-responsive genes in nitrate reductase mutants

Fungal Genetics and Biology, 2013
In fungi, transcriptional activation of genes involved in NO3(-) assimilation requires the presence of an inducer (nitrate or nitrite) and low intracellular concentrations of the pathway products ammonium or glutamine. In Aspergillus nidulans, the two transcription factors NirA and AreA act synergistically to mediate nitrate/nitrite induction and ...
Andreas Gallmetzer, Thorsten Schinko, Joseph Strauss, Sotiris Amillis   +3 more
openaire   +3 more sources

Nanomedicine‐Driven Modulation of Reductive Stress for Cancer Therapy

Advanced Science, EarlyView.
This article introduces a novel therapeutic paradigm that deliberately induces reductive stress within tumor cells to exploit their unique biochemical vulnerabilities. It systematically reviews the underlying biological mechanisms, current detection and monitoring techniques, and emerging advanced nanotechnology platforms specifically designed to ...
Yumin Mao, Xianping Liu, Xu Chu, Feixiang Chen, Ruicheng Shi, Zonghao Liu, Yelin Wu, Yanyan Liu, Wenbo Bu   +8 more
wiley   +1 more source

A novel mechanism for dissimilatory nitrate reduction to ammonium in Acididesulfobacillus acetoxydans

mSystems
The biological route of nitrate reduction has important implications for the bioavailability of nitrogen within ecosystems. Nitrate reduction via nitrite, either to ammonium (ammonification) or to nitrous oxide or dinitrogen (denitrification), determines
Reinier A. Egas, Julia M. Kurth, Sjef Boeren, Diana Z. Sousa, Cornelia U. Welte, Irene Sánchez-Andrea   +5 more
doaj   +1 more source

Niche differentiation in nitrogen metabolism among methanotrophs within an operational taxonomic unit [PDF]

, 2014
Background: The currently accepted thesis on nitrogenous fertilizer additions on methane oxidation activity assumes niche partitioning among methanotrophic species, with activity responses to changes in nitrogen content being dependent on the in situ ...
Boon, Nico, De Vos, Paul, Heylen, Kim, Hoefman, Sven, van der Ha, David, Vandamme, Peter   +5 more
core   +3 more sources

Growth on nitrate and occurrence of nitrate reductase-encoding genes in a phylogenetically diverse range of ectomycorrhizal fungi.

New Phytologist, 2008
Ectomycorrhizal (ECM) fungi are often considered to be most prevalent under conditions where organic sources of N predominate. However, ECM fungi are increasingly exposed to nitrate from anthropogenic sources.
Cajsa M. R. Nygren, U. Eberhardt, M. Karlsson, J. Parrent, Björn D. Lindahl, Andy F. S. Taylor   +5 more
semanticscholar   +1 more source