نتایج جستجو برای: redox reactions

تعداد نتایج: 201609  

2007
Ken Jones

Oxidative stress Oxidative stress can be defined as an imbalance between the production of reactive oxygen species (ROS) in the body that disrupts its ability to detoxify reactive intermediates, or to repair the damage to organ and cellular systems that can be caused by ROS. Intracellular redox balance (the dynamic balance between oxidizing and reducing species within cells) is closely coupled ...

2017
Masatoshi Yamada Yoshiteru Hashimoto Takuto Kumano Seiya Tsujimura Michihiko Kobayashi

In general, hemoproteins are capable of catalyzing redox reactions. Aldoxime dehydratase (OxdA), which is a unique heme-containing enzyme, catalyzes the dehydration of aldoximes to the corresponding nitriles. Its reaction is a rare example of heme directly activating an organic substrate, unlike the utilization of H2O2 or O2 as a mediator of catalysis by other heme-containing enzymes. While it ...

2012
Tadeusz Michałowski

The Generalized Approach To Electrolytic Systems (GATES) (Michałowski, 2001, 2010) provides the possibility of thermodynamic description of equilibrium and metastable, redox and non-redox, mono-, twoand three-phase systems, with the possibility of all attainable/pre-selected physicochemical knowledge to be involved, with none simplifying assumptions done for calculation purposes, where differen...

Journal: :PLoS Pathogens 2009
Nicole Sturm Esther Jortzik Boniface M. Mailu Sasa Koncarevic Marcel Deponte Karl Forchhammer Stefan Rahlfs Katja Becker

The malarial parasite Plasmodium falciparum possesses a functional thioredoxin and glutathione system comprising the dithiol-containing redox proteins thioredoxin (Trx) and glutaredoxin (Grx), as well as plasmoredoxin (Plrx), which is exclusively found in Plasmodium species. All three proteins belong to the thioredoxin superfamily and share a conserved Cys-X-X-Cys motif at the active site. Only...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1999
C Jacob W Maret B L Vallee

Selenium has been increasingly recognized as an essential element in biology and medicine. Its biochemistry resembles that of sulfur, yet differs from it by virtue of both redox potentials and stabilities of its oxidation states. Selenium can substitute for the more ubiquitous sulfur of cysteine and as such plays an important role in more than a dozen selenoproteins. We have chosen to examine z...

2010
S. D. Joseph M. Camps-Arbestain Y. Lin P. Munroe C. H. Chia J. Hook L. van Zwieten S. Kimber A. Cowie B. P. Singh J. Lehmann N. Foidl R. J. Smernik J. E. Amonette

Interactions between biochar, soil, microbes, and plant roots may occur within a short period of time after application to the soil. The extent, rates, and implications of these interactions, however, are far from understood. This review describes the properties of biochars and suggests possible reactions that may occur after the addition of biochars to soil. These include dissolution–precipita...

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