Navigation Links
UMass Amherst researchers reveal mechanism of novel biological electron transfer
Date:3/19/2013

rials used in electronics. Electrons are conducted over remarkable distances, thousands of times the cell's length. But exactly how the pili accomplished this wasn't clear.

They knew that the conductivity of synthetic conducting organic materials can be attributed to aromatic ringed structures which share electrons, suspended in a kind of a cloud that allows the overlapping electrons to easily flow. It seemed possible that amino acids, which have similar aromatic rings, might serve the same function in biological protein structures like pili. Lovley's team looked for likely aromatic amino acid targets and then substituted non-aromatic amino acids for the aromatic ones to see if this reduced the conductivity of the pili.

It worked. The re-engineered pili with non-aromatic compounds substituted for aromatic ones looked perfect and unchanged under a microscope, but now they no longer functioned as wires. "This new strain is really bad at what Geobacter does best," Lovley says. "Geobacter is known for its ability to grow on iron minerals and for generating electric current in microbial fuel cells, but without conductive pili those capabilities are greatly diminished."

"What we did is equivalent to pulling the copper out of an extension cord," he adds. "The cord looks the same, but it can't conduct electricity anymore."

The ability of protein filaments to conduct electrons in this way not only has ramifications for scientists' basic understanding of natural microbial processes but practical implications for environmental cleanup and the development of renewable energy sources as well, he adds. Lovley's UMass Amherst lab has already been working with federal agencies and industry to use Geobacter to clean up groundwater contaminated with radioactive metals or petroleum and to power electronic monitoring devices with current generated by Geobacter.

His group has also recently shown that Geobact
'/>"/>

Contact: Janet Lathrop
jlathrop@admin.umass.edu
413-545-0444
University of Massachusetts at Amherst
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. UMass Medical School faculty elected to the American Association for the Advancement of Science
2. UMass Amherst biochemists developing tools to stop plague and other bacterial threats
3. UMass Medical School researchers discover a new role for RNAi
4. UMass Medical School scientist named 2012 Pew Latin-American Fellow in the Biomedical Sciences
5. UMass Amherst wildlife researcher photographs rare Sumatran rabbit
6. Chemical engineers at UMass Amherst find high-yield method of making xylene from biomass
7. NIST/UMass study finds evidence nanoparticles may increase plant DNA damage
8. Alnylam and UMass Medical School announce Tuschl I patent upheld in European opposition proceedings
9. Researchers create map of shortcuts between all human genes
10. Researchers divide enzyme to conquer genetic puzzle
11. Researchers building stronger, greener concrete with biofuel byproducts
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UMass Amherst researchers reveal mechanism of novel biological electron transfer
(Date:10/29/2014)... suggesting air pollutants released by unconventional oil and gas ... is published today in the open access journal ... and formaldehyde were found. The study is the first ... live near production sites and could be used to ... gas come from reserves that do not readily flow ...
(Date:10/29/2014)... registration is open for the Society ... Meeting. SIR 2015 is the one place ... and related health care professionals can come ... science and technologies being presented, discussed and ... in minimally invasive, image-guided medicine, SIR 2015 ...
(Date:10/29/2014)... the safety of nanoparticles is all the rage. Thousands ... examining the question of whether titanium dioxide nanoparticles from ... the body, whether carbon nanotubes from electronic products are ... be or whether nanoparticles in food can get into ... interest is great, research funds are flowing – and ...
Breaking Biology News(10 mins):Air quality and unconventional oil and gas sites 2Air quality and unconventional oil and gas sites 3SIR 2015: Interventional radiology shapes tomorrow's medicine 2Nanosafety research: The quest for the gold standard 2Nanosafety research: The quest for the gold standard 3
... an extract of an exotic type of seaweed, say British ... used to increase the fibre content of cakes, burgers and ... fat and a low degree of healthy nutrients, say the ... publish their findings in the academic journal Critical Reviews in ...
... artificial shark skin could help ships sailing smoothly. The ... hulls is a major cause of increased energy costs ... design that prevents this so called 'bio-fouling'. , Ralph ... is presenting his work on the application of artificial ...
... us from disease, destroying invading microbes with a swarm of attacking ... ganging up on normal tissues in our body and wreaking havoc. ... the inner ear, home to the tiny, delicate structures that allow ... the ability to hear in one or both ears. Some might ...
Cached Biology News:Seaweed could make junk food healthier 2New Lab Research May Help Those Deafened By Immune System Attack 2New Lab Research May Help Those Deafened By Immune System Attack 3New Lab Research May Help Those Deafened By Immune System Attack 4
(Date:10/30/2014)... Diego, CA (PRWEB) October 30, 2014 ... announced today that they have manually curated public data ... and non profit customers. the data is now ... manually curates and unifies public and internal data sources ... value and knowledge out of the data that becomes ...
(Date:10/30/2014)... UAE (PRWEB) October 30, 2014 Grace Century ... Dr. James A. Manganello, Chairman of the Board, to the ... Bahamas. The appointment was made by the Ministry of ... September 24th, 2014. , More than a year ... Research Bill , Prime Minister Perry Christie said the government ...
(Date:10/30/2014)... 2014) – The severe flooding that devastated a wide ... destructive if the bridges, roads and other infrastructure had ... from the University of Colorado Denver. , "People need ... Jimmy Kim, PhD, associate professor of structural engineering at ... and lead author the study. "There is an assumption ...
(Date:10/27/2014)... 27, 2014 Kalorama Information says that PCR ... in the United States and ... market researcher said the FDA,s Emergency Use Authorization (EUA) to ... for the detection of the Ebola virus was an ... routinely assess the IVD industry and its biennial survey ...
Breaking Biology Technology:Rancho BioSciences Manually Curated TCGA Data Sets Available 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 3CU Denver study says upgrading infrastructure could reduce flood damage 2Kalorama: PCR The Go-to Test in Ebola Fight 2Kalorama: PCR The Go-to Test in Ebola Fight 3
... Force History Appointed to Highest Noncommissioned Officer Position , ... announced today that Retired Chief Master Sergeant of the Air ... Vice President of Strategic Partnerships. MicroTech is one of ... the U.S. In his new role, McKinley will provide strategic ...
... achieves similar efficacy to daily injections of follitropin beta ... Study , , AMSTERDAM, July 1 Schering-Plough ... from the Phase III ENGAGE clinical trial demonstrating that ... class of sustained follicle stimulants, achieved similar efficacy to ...
... Inc., a subsidiary of Eisai Corporation of North America, ... to express and develop therapeutic monoclonal antibodies for the ... disease. , , Under the terms of the ... (SEP(TM)) technology and its expertise to produce and develop ...
Cached Biology Technology:Air Force Chief Master Sergeant Rod McKinley (U.S. Air Force Retired) Joins MicroTech as Vice President of Strategic Partnerships 2Air Force Chief Master Sergeant Rod McKinley (U.S. Air Force Retired) Joins MicroTech as Vice President of Strategic Partnerships 3Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 2Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 3Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 4Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 5Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 6Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 7Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 8Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa 9Morphotek(R), Inc. Announces a Research Collaboration Agreement with Synageva BioPharma Corporation to Develop Potential Treatments for Cancer and Infectious Disease 2Morphotek(R), Inc. Announces a Research Collaboration Agreement with Synageva BioPharma Corporation to Develop Potential Treatments for Cancer and Infectious Disease 3
The Synergy HT utilizes a unique dual-optics design combined with monochromator wavelength selection to provide uncompromised performance in absorbance, fluorescence and luminescence reading modes. ...
... These are just some the things youll ... of Protein-Protein Interactions, edited by Erica Golemis, One ... skillfully edited compilation of topics in protein interaction ... text that must be a part of your ...
... Persistent Analysis Environment 2) Dot plot, ... 3) Software Compensation 4) Cell Cycle ... Platform 7) Intelligent batch generation of graphs ... 9) Single drag-and-drop operations to perform complex ...
Eagle's Ham's amino acids; EHAA...
Biology Products: