Mimicking Nature, Scientists Can Now Extend Redox Potentials Nov 6, 2009
5, 2009) New insight into how nature handles some fundamental processes is guiding researchers in the design of tailor-made proteins for applications such as artificial photosynthetic centers, long-range electron transfers, and fuel-cell catalysts for energy conversion ... This made it difficult, if not impossible, to tune the redox potentials without changing other electron transfer properties or the efficiency ... Cupredoxins use a single redox-active center, whose reduction potential is... (Science Daily)
Redox Reactions Defined Sep 21, 2009
Electron Transfer in Redox Reactions. To explain the electronic transfer concept, the element magnesium will be used as example. (Suite101.com)
New Microbe Strain Makes More Electricity, Faster Aug 4, 2009
He and colleagues grew Geobacter as usual on a graphite electrode, providing acetate as food and allowing a colony to form the biologically active slime, or biofilm where electron transfer takes place across the nanowires. But for this new experiment they added a tiny, 400-millivolt pushback current in the electrode that forced Geobacter to press harder to get rid of its electrons. (Science Daily)
Nanotubes Weigh A Single Atom Jul 24, 2009
So we have the single electron transfer concept, which is more sensitive, and the field effect transistor concept, which is faster. Single atoms. (Science Daily)
Photosynthesis Surprise: Key Metal Swapped May 23, 2009
"The electron transfer driving force can be determined by either the properties of the metal cofactors themselves or through their interaction with the protein," said Lin ... Electron transfer in the Rhodobacter sphaeroides reaction center assembled with zinc bacteriochlorophyll. (Science Daily)
New Sequencing Technique To Prod Medical Benefits From Killer Venom May 6, 2009
The Rockefeller team devised a way to charge up the toxin samples, allowing the mass spectrometer to cut more peptide bonds using the relatively new technique of electron transfer dissociation (ETD). The result was data having much higher information content and containing fewer of the gaps that slow down researchers using traditional techniques. (Science Daily)
Key Protein In Cellular Respiration Discovered Apr 15, 2009
4, 2008) Scientists have for the first time succeeded in monitoring electron transfer by Complex I in real time. In the future, this work might, for example, have medical relevance, because most of the. (Science Daily)
Orientation of antenna protein in photosynthetic bacteria described Apr 3, 2009
The taco shell is a sort of "middleman" in the antenna system, sandwiched in between a larger antenna and a complex called the reaction center, where all the electron transfer chemistry takes place. Most of the absorption of light is carried out by a complex called the chlorosome that then transfers the energy to the trimeric protein that in turn transfers to the reaction center. (EurekAlert!)
Molecular determinants archetypical to the phylum Nematoda Mar 19, 2009
In addition, we identified a group of nematode-restricted sequence features in energy-generating electron transfer complexes as potential targets for new chemicals with minimal or no toxicity to the host. Conclusion. (BioMed Central)
