Navigation Links
Biological wires carry electricity thanks to special amino acids
Date:3/11/2013

Slender bacterial nanowires require certain key amino acids in order to conduct electricity, according to a study to be published in mBio, the online open-access journal of the American Society for Microbiology, on Tuesday, March 12.

In nature, the bacterium Geobacter sulfurreducens uses these nanowires, called pili, to transport electrons to remote iron particles or other microbes, but the benefits of these wires can also be harnessed by humans for use in fuel cells or bioelectronics. The study in mBio reveals that a core of aromatic amino acids are required to turn these hair-like appendages into functioning electron-carrying biological wires.

"It's the aromatic amino acids that make it a wire," says lead author Derek Lovley of the University of Massachusetts, Amherst. Lovley and his colleagues removed the pivotal amino acids from the pili and replaced them with smaller, non-aromatic amino acids. Without these key components, Lovley says, the pili are nothing more than protein strings. "We showed it's not good enough to just make the string - you've got to make a wire," says Lovley.

G. sulfurreducens "breathes" by removing electrons from organic materials and funneling them to iron oxides or to other microorganisms, much the way humans pull electrons out of organic molecules in food and dump them on oxygen. The bacteria use their pili to reach out to iron oxides or other microbes, transferring the "waste" electrons along the structure to the destination. Geobacter's pili are only 3-5 nanometers wide, but they can be 20 micrometers long, many times longer than the cell itself.

Trafficking in electrons is how all living things breathe, but it is normally carried out by discrete proteins or other molecules that act like containers for shuttling electrons from one place to another. Lovley says earlier results showed the pili in G. sulfurreducens possess metallic-like conductivity, th
'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Page: 1 2

Related biology news :

1. Wayne State University researchers techniques enable more, faster testing of biological liquids
2. Snooze button on biological clocks improves cell adaptability
3. Advance promises to expand biological control of crop pests
4. Visualizing biological networks in 4-D
5. Cornell engineers solve a biological mystery and boost artificial intelligence
6. The neurobiological consequence of predating or grazing
7. UTSA engineer Hai-Chao Han named Fellow of Medical and Biological Engineering Institute
8. A nanoscale window to the biological world
9. Synthetic and biological nanoparticles combined to produce new metamaterials
10. New book details the biological and cultural diversity of Khawa Karpo, sacred mountain of Tibet
11. Developing second skin military fabric to repel chemical and biological agents
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/21/2014)... working at the University of California, San Diego, have ... marks that control the activity of genes based on ... results from its application to human embryonic cells in ... September 21. , "All of our cells have the ... functions," said John Whitaker, lead author of the report. ...
(Date:9/19/2014)... Call it the Jimmy Durante of dinosaurs ... nasal profile. The new dinosaur, named Rhinorex ... University and Brigham Young University, lived in what ... during the Late Cretaceous period. , Rhinorex, which ... and a close relative of other Cretaceous hadrosaurs ...
(Date:9/19/2014)... species which over thousands of years has adapted to the ... that makes the cold dangerous for you. , This is ... and the cold provoking substance, called nonylphenol, comes from the ... suspected of being a endocrine disruptor, but when entering the ... ability to protect the cells in its body from cold ...
Breaking Biology News(10 mins):Program predicts placement of chemical tags that control gene activity 2New hadrosaur noses into spotlight 2Environmental pollutants make worms susceptible to cold 2Environmental pollutants make worms susceptible to cold 3
... Researchers have been unable to build an ideal photonic ... ultrafast optical computers. But now, University of Utah chemists ... with the ideal, diamond-like structure: They are found in ... Brazil. It appears that a simple creature like ...
... of the greatest zoological mysteries for over a century. ... puzzling crustaceans, despite the plethora of these larvae in ... what y- larvae grow up to be. A study ... reports the transformation of the larvae into a previously ...
... the Great Lakes have prompted the need to better ... collaborative project is aimed at improving information for beach ... close beaches to protect public health. This collaborative effort ... and other federal, state and local agencies. ...
Cached Biology News:The photonic beetle 2The photonic beetle 3The photonic beetle 4The photonic beetle 5Clue to mystery crustacean in parasite form 2To swim or not to swim? 2
(Date:9/19/2014)... CORAL SPRINGS, Florida , September 19, 2014 /PRNewswire/ ... biotech companies release latest developments, patents and results of ... (OTC: GNSZ), Eli Lilly and Company (NYSE: ... ), Celgene Corporation (NASDAQ: CELG ) and ... (OTCQB: GNSZ), a leader in developing prodrug therapeutics for ...
(Date:9/19/2014)... 2014 , The first grants ... Paediatric Endocrinology (ESPE) Meeting  Investment supports innovative ... in the field of growth  , EMD ... Germany , today announced the first recipients of ... awards were announced during a Satellite Symposium organized by ...
(Date:9/18/2014)... About POCT POCT, ... clinical laboratory. It helps in making fast clinical ... medication. POCT is gaining popularity due to the ... as diabetes, heart disease, and obesity. It is ... to minimize errors during the diagnosis of patients. ...
(Date:9/18/2014)... , September 18, 2014 ... ( http://www.researchandmarkets.com/research/czvg3s/biocompatible ) has announced the ... - Global Strategic Business Report" ... http://photos.prnewswire.com/prnh/20130307/600769) ,This report analyzes the worldwide ... Million by the following Product Segments: ...
Breaking Biology Technology:Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 2Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 3Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 4Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 5Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 6Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 7EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3POCT Market in China 2014-2018 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3
... a positive third,quarter, the biotech industry continued its upward climb ... the state of the economy,and interest rate jitters as the ... Index, for example, rose an impressive 6.1% in,October -- in ... ahead of the,DJIA which was unchanged. "Entering the final ...
... COLUMBIA, Md., Nov. 1 Martek Biosciences,Corporation (Nasdaq: ... in the United,States District Court in Wilmington, Delaware, ... a permanent injunction in Martek,s favor,against the defendants ... Lonza, Ltd., Nutrinova Inc. and Nutrinova Nutrition Specialties ...
... provide free home caregiving to disabled veterans, ... its,2007 We Care For Veterans campaign to honor ... qualified disabled veterans. (Logo: http://www.newscom.com/cgi-bin/prnh/20070521/LAM004ALOGO ) ... are,donating 20 hours each of free in-home care ...
Cached Biology Technology:Biotech Continues Upward Climb in October 2Biotech Continues Upward Climb in October 3Biotech Continues Upward Climb in October 4Martek to Obtain Permanent Injunction Against Lonza in U.S. Patent Infringement Suit; Jury Verdict on Infringement of Two of Three Patents Upheld by Judge 2Martek to Obtain Permanent Injunction Against Lonza in U.S. Patent Infringement Suit; Jury Verdict on Infringement of Two of Three Patents Upheld by Judge 3Homewatch CareGivers Launches 2007 We Care For Veterans Campaign 2
... micro 1 is a dramatic breakthrough in accurate, ... with 10nL resolution, the micro 1 has unique ... And, the micro 1 never needs re-calibration as ... Screen programming on an LCD Display , Graphical ...
... B3 series of microscopes offer all of ... for laboratory work. Equipped with Koehler illumination, ... (ASC) objectives. The B3 is the workhorse ... binocular tube eliminates the need for re-focusing ...
... Dye Primer Manual Cycle Sequencing Kit is ... primers and high-resolution fluorescence scanners. Sequencing reactions ... slab gel electrophoresis and scanning of the ... The kit components have been optimized ...
Rabbit polyclonal to Esa1 ( Abpromise for all tested applications)....
Biology Products: