Fra proteins influencing filament integrity, diazotrophy and localization of septal protein SepJ in the heterocyst-forming cyanobacterium Anabaena sp.

Jun 27, 2010 | Sin categoría

Anabaena sp. strain PCC 7120 is a filamentous cyanobacterium that can fix N2 in differentiated cells called heterocysts, which exchange nutritional and regulatory compounds with the neighbouring photosynthetic vegetative cells. The cells in the filament appear to be...

Oxidation state and local structure of Ti-based additives in the Reactive Hydride Composite 2LiBH4 + MgH2

May 27, 2010 | Sin categoría

Nowadays, the technological utilization of Reactive Hydride Composites (RHC) as hydrogen storage materials is limited by their reaction kinetics. However, addition of transition metal based additives, for instance titanium isopropoxide (Ti-iso), to the 2LiBH4+MgH2...

Arabidopsis S-Sulfocysteine Synthase Activity Is Essential for Chloroplast Function and Long-Day Light Dependent Redox Control

Abr 27, 2010 | 2010, 2010, 2010, 2010, 2010, 2010

In bacteria, the biosynthesis of Cys is accomplished by two enzymes that are encoded by the cysK and cysM genes. CysM is also able to use thiosulfate as a substrate to produce S-sulfocysteine. In plant cells, the biosynthesis of Cys occurs in the cytosol,...

Cyclometallation and Hydrogen/Deuterium Exchange Reactions of an Arylphosphine Ligand upon Coordination to {Ir(C5Me5)}

Mar 27, 2010 | Sin categoría

The cyclometallated compounds [(C5Me5)Ir(X){PMe(2,6-CH2(Me)C6H3)(2,6-Me2C6H3)}] (X=Cl, H, Me) have been synthesized in high yields and their potential for C-H activation demonstrated. Subsequent functionalization of these species has provided a series of complexes...

An O-Acetylserine(thiol)lyase Homolg with L-Cysteine Desulfhydrase Activity Regulates Cysteine Homeostasis in Arabidopsis

Feb 27, 2010 | Artículos del Mes, Artículos del Mes, Artículos del Mes, Artículos del Mes, Artículos del Mes

Cysteine (Cys) occupies a central position in plant metabolism due to its biochemical functions. Arabidopsis (Arabidopsis thaliana) cells contain different O-acetylserine(thiol)lyase (OASTL) enzymes that catalyze the biosynthesis of Cys. Because they are localized in...

Ionic liquid templated TiO2 nanoparticles as a support in gold environmental catalysis

Ene 27, 2010 | Artículos del Mes

This work presents the synthesis of a nanostructured titania support and its subsequent utilization for the gold particles deposition and application in the reaction of the CO oxidation. A functionalized ionic liquid has been used as a templating agent for the...