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Electron transfer pathways and spin–spin interactions in Mo- and Cu-containing oxidoreductases
(Elsevier, 2021-12)
Oxidoreductases containing transition metal ions are widespread in nature and are essential for living organisms. In these enzymes, transition metal ions are present either as mononuclear centers or organized into clusters, ...
Theoretical insight into the hydroxylamine oxidoreductase mechanism
(Elsevier Science Inc, 2008-07)
The multiheme enzyme hydroxylamine oxidoreductase from the autotrophic bacteria Nitrosomonas europaea catalyzes the conversion of hydroxylamine to nitrite, with a complicate arrangement of heme groups in three subunits. ...
Kinetic and structural studies of aldehyde oxidoreductase from Desulfovibrio gigas reveal a dithiolene-based chemistry for enzyme activation and inhibition by H2O2
(Public Library of Science, 2013-12-31)
Mononuclear Mo-containing enzymes of the xanthine oxidase (XO) family catalyze the oxidative hydroxylation of aldehydes and heterocyclic compounds. The molybdenum active site shows a distorted square-pyramidal geometry in ...
EPR studies of the Mo-enzyme aldehyde oxidoreductase from Desulfovibrio gigas: An application of the Bloch–Wangsness–Redfield theory to a system containing weakly-coupled paramagnetic redox centers with different relaxation rates
(Elsevier Science Inc, 2009-10)
Electron transfer proteins and redox enzymes containing paramagnetic redox centers with different relaxation rates are widespread in nature. Despite both the long distances and chemical paths connecting these centers, they ...
Immobilization of catalase from Aspergillus niger on inorganic and biopolymeric supports for H2O2 decomposition
(Elsevier Science, 2004-02)
This paper studies the H2O2 decomposition using supported catalase. The supports are γ-Al2O3, FeCl2-treated γ-Al2O3, glutaraldehyde-treated chitosan and glutaraldehyde-treated cellulose. Catalase/γ-Al2O3 is inactive, but ...
Suelo de olivares: aspectos físicoquímicos y biológicos
(Sociedad Venezolana de la Ciencia del Suelo, 2013-11)
El objetivo de este trabajo fue caracterizar suelos de olivares en dos regiones definidas de Argentina como son el noroeste y la pampa ondulada. Para ello se evaluaron las principales características fisicoquímicas, ...
Dextran causes aggregation of mitochondria and influences their oxidoreductase activities and light scattering
(ELSEVIER SCIENCE INC, 2003-01-01)
It has been reported that dextrans diminish the intermembrane space of mitochondria, increase the number of contact sites between the inner and the outer mitochondrial membranes, decrease the outer membrane permeability ...
A possible restriction of ferro- and ferricyanide oxidoreductase activities of rat liver mitochondria by the outer membrane.
(ELSEVIER SCIENCE INC, 2005-11-15)
In this work, various ferro-ferricyanide oxidoreductase activities of rat liver mitochondria were studied to find conditions under which the outer membrane might restrict the flux of these highly charged non-biological ...
Nitroreductive metabolic activation of some carcinogenic nitro heterocyclic food contaminants in rat mammary tissue cellular fractions
(Pergamon-Elsevier Science Ltd, 2009-01)
Several nitrofurans and nitroimidazoles have been widely used in veterinary medicine. Some of these compounds are breast carcinogens in rodents and their mechanism of action is hypothesized to be related to reactive ...
Enhancement of Photophysical and Photosensitizing properties of Flavin Adenine Dinucleotide by Mutagenesis of the C-terminal extension of a bacterial Flavodoxin Reductase
(Wiley Vch Verlag, 2015-03)
The role of the mobile C-terminal extension present in Rhodobacter capsulatus ferredoxin–NADP(H) reductase (RcFPR) was evaluated using steady-state and dynamic spectroscopies for both intrinsic Trp and FAD in a series of ...