Evidence of Upconversion Luminescence Contribution to the Improved Photoactivity of Erbium doped TiO2 System
Er(3+)-TiO(2) synthesized by surfactant free hydrothermal method exhibit good photoactivities under sun-like excitation for the degradation of phenol. The presence of Er(3+) does not affect significantly to the structural and morphological features of the TiO(2). The...
The CopRS Two-Component System Is Responsible for Resistance to Copper in the Cyanobacterium Synechocystis sp. PCC 6803
Photosynthetic organisms need copper for cytochrome oxidase and for plastocyanin in the fundamental processes of respiration and photosynthesis. However, excess of free copper is detrimental inside the cells and therefore organisms have developed homeostatic...
Influence of Vanadium or Cobalt oxides on the CO oxidation behavior of Au/MOx/CeO2-Al2O3 systems
Se han preparado una serie de catalizadores Au/Ceria-Alumina dopados con óxido de vanadio y óxido de cobalto. Los sistemas dopados con Vanadio resultaron poco eficaces en la oxidación de CO debido a la formación del compuesto estequiométrico CeVO4 cuya presencia se...
Thiol-based redox modulation of a cyanobacterial eukaryotic-type Serine/Threonine kinase required for oxidative stress tolerance
Aims: Protein phosphorylation is a principal signalling mechanism that mediates regulation of enzymatic activities, modulation of gene expression and adaptation to environmental changes. Recent studies have shown ubiquitous distribution of eukaryotic-type...
Mitochondrial Sulfide Detoxification Requires a Functional Isoform O-Acetylserine(thiol)lyase C in Arabidopsis thaliana
In non-cyanogenic species, the main source of cyanide derives from ethylene and camalexin biosyntheses. In mitochondria, cyanide is a potent inhibitor of the cytochrome c oxidase and is metabolized by the β-cyanoalanine synthase CYS-C1, catalyzing the conversion of...