HOME >> BIOLOGY >> NEWS
Scientists decipher genome of bacterium that remediates uranium contamination, generates electricity

Rockville, MD Shining new light on the molecular secrets behind a microbe's capability to generate electricity and to help clean up radioactive contamination, scientists at The Institute for Genomic Research (TIGR) and collaborators have deciphered and analyzed the genome of Geobacter sulfurreducens.

The report, published in the December 12th issue of Science, found that the bacterium a member of a family of organisms that can remove dissolved uranium from groundwater possesses extraordinary capabilities to transport electrons and "reduce" metal ions as part of its energy-generating metabolism. The authors conclude that Geobacter "clearly has potential for bioremediation of radioactive metals and electricity generation."

Reduction is a chemical process during which electrons are added to metal ions. As a result, the metals become less soluble (dissolvable) in water and precipitate into solids, which are more easily removed. Small charges of electricity are also created through the reduction process.

Geobacter's capacity for reduction is enhanced by more than 100 of its genes that appear to encode for various forms of c-type cytochromes. Those are proteins which facilitate electron transfers and metal reduction during the organism's energy metabolism. The presence of those c-type cytochrome genes the most and the greatest variety found so far in a bacterial species are thought to give G. sulfurreducens a significant capacity and flexibility to reduce metals or create electricity.

By analyzing the genome, scientists discovered that the microbe has genes that give it the capacity to move towards metallic compounds. In addition, G. sulfurreducens which scientists had previously regarded as an anaerobic organism (living in environments without oxygen) also has genes that could allow it to function in the presence of oxygen under certain conditions.

"We've provided a comprehensive picture that has led to fundamental
'"/>

Contact: Robert Koenig
rkoenig@tigr.org
301-838-5880
The Institute for Genomic Research
11-Dec-2003


Page: 1 2 3 4

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/28/2020)... ... June 25, 2020 , ... ... for biopharmaceutical R&D, today announced that it has entered into a multi-year ... antibodies (Multiclonics®), to support their translational and clinical research strategy to discover ...
(Date:6/23/2020)... , ... June 22, 2020 , ... The field of ... ligand binding assays (LBA) have dominated this area. However, the use of mass spectrometry ... , This now necessitates the question “How do you choose which approach to use ...
(Date:6/19/2020)... ... June 18, 2020 , ... Join experts from ... Principal Scientist in a live webinar on Wednesday, July 8, 2020 at ... the way we genetically engineer new models. However, while modifying the genome may be ...
Breaking Biology News(10 mins):
(Date:6/23/2020)... ... June 22, 2020 , ... ... antagonist, DRP-104, will be presented June 22-24 during the American Association for Cancer ... and, the other profiles the potent, consistent single agent activity in KEAP1 mutant ...
(Date:6/19/2020)... ... 2020 , ... The Vitaspace project was founded by the famous ... prolong life and find a way (medicine or technology) that will help to preserve ... various scientists from all over the world, doctors, and all people who care. , ...
(Date:6/11/2020)... ... June 09, 2020 , ... PathSensors Inc., a Baltimore ... Innovation Research (SBIR) program funded by the National Institute of Food and Agriculture ... Field”. The project’s goal was to engineer and develop a field-deployable instrument for ...
(Date:6/11/2020)... (PRWEB) , ... June 09, 2020 , ... Reducing carbon ... the world. From the Paris Agreement to stock market dips, ways to reduce CO2 ... adding biofuels to their portfolio. Most of the biofuels being produced today are created ...
Breaking Biology Technology:
Cached News: