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:5/22/2015)... 22, 2015 According to a ... (2D, 3D, Thermal, Emotion, Forensic), by Software (Middleware, Databases), by ... Utilities, Consumer and Home) - Global Forecast to 2020", ... $2.77 Billion in 2015 to $6.19 Billion by 2020, ... 79 market data Tables and   43 Figures spread ...
(Date:5/19/2015)... 18, 2015 Fingerprint Cards (FPC) has ... FPC1145, FPC1155 and FPC1035 from one if its module partners. ... including Q3 2015 and the sensors will be used by ... values for 2015 hereby amount to 740 MSEK to date. ... 140 MSEK and a number of smaller orders not separately ...
(Date:5/14/2015)... NEW YORK , May 14, 2015 ... specializing in identity verification and online remote ... Instructure, a software-as-a-service (SaaS) company and creator ... Shared customers of the two companies will ... Proctortrack in Canvas. As a ...
Breaking Biology News(10 mins):Facial Recognition Market Worth $6.19 Billion by 2020 2Facial Recognition Market Worth $6.19 Billion by 2020 3Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2
... NEW ORLEANS Three and a half years after ... and sustained use of genetically engineered T cells to ... of Medicine at the University of Pennsylvania and the ... results of studies involving both adults and children with ...
... can have beneficial health effects, scientists have sought to ... A new study by researchers in Wisconsin, Spain, and ... in the body following a period of mindfulness meditation. ... of intensive mindfulness practice in a group of experienced ...
... pulses support the idea that intuition-defying quantum interactions between ... light to fuel their growth. But key details of ... role that quantum physics may play in understanding them ... an Overview Article in the January issue of ...
Cached Biology News:Penn Medicine team reports on study of first 59 leukemia patients who received cell therapy 2Penn Medicine team reports on study of first 59 leukemia patients who received cell therapy 3Penn Medicine team reports on study of first 59 leukemia patients who received cell therapy 4Penn Medicine team reports on study of first 59 leukemia patients who received cell therapy 5Study reveals gene expression changes with meditation 2Study reveals gene expression changes with meditation 3Quantum effects help cells capture light, but the details are obscure 2
(Date:5/26/2015)... 26, 2015 The University of ... Max Planck Society establishing the Max Planck-University ... center will link two of the world's foremost research ... only the third Max Planck Centre in North America. ... for optics and photonics, was with university and ...
(Date:5/26/2015)... 26, 2015 Innovacyn, a leader ... the human and animal health industries, announced today ... Innovators of Agriculture College Scholarship Award. The scholarship ... exhibits a passionate commitment to the agriculture industry ... year’s winners, Alexis Pedrow from Anderson County Jr/Sr ...
(Date:5/26/2015)... May 26, 2015  Sangamo BioSciences, Inc. (NASDAQ: SGMO ... and CEO, will provide an update on the progress of ... of the company,s business strategy at 1:30pm ET on Monday, ... The conference is being held in New York, ... live and may be accessed via a link on the ...
(Date:5/26/2015)... 26, 2015 Tianyin Pharmaceutical Inc. (NYSE Amex: ... the patented biopharmaceutical, modernized traditional Chinese medicine (mTCM), branded ... Company,s Annual Meeting of Shareholders for fiscal year ended ... at the Company,s office located in Chengdu, ... AM (local time in Chengdu, China ...
Breaking Biology Technology:Third Max Planck Centre in North America Inaugurated at University of Ottawa 2Third Max Planck Centre in North America Inaugurated at University of Ottawa 3Innovacyn Announces Winners Of This Year’s Vetericyn® College Scholarship Award 2Innovacyn Announces Winners Of This Year’s Vetericyn® College Scholarship Award 3Sangamo BioSciences Announces Presentation At The Jefferies 2015 Global Healthcare Conference 2TPI Adjourned Its 2014 Annual Shareholder Meeting and Received Notice of Non-Compliance with NYSE MKT Continued Listing Requirements 2TPI Adjourned Its 2014 Annual Shareholder Meeting and Received Notice of Non-Compliance with NYSE MKT Continued Listing Requirements 3
... a lot of excitement a few years ago following ... could be used to build nanoparticles of a given ... remained out of reach. An international team of researchers ... and Professor Friedrich Simmel of the Technische Universitaet Muenchen ...
... 2012 The Foundation of UMDNJ, an affiliate of ... biomarkers grant through the Bill & Melinda Gates Foundation,s ... seeks to overcome persistent bottlenecks in creating new tools ... With the grant, Dr. David Alland, ...
... United Arab Emirates   is the First Country in ... Allergy Sufferers - Nycomed, a Takeda company, ... in the United Arab Emirates for the treatment of allergic ... adults and adolescents over the age of 12.   ...
Cached Biology Technology:Nano spiral staircases modify light 2Foundation of UMDNJ Receives Grand Challenges Tuberculosis Biomarkers Grant 2Foundation of UMDNJ Receives Grand Challenges Tuberculosis Biomarkers Grant 3Nycomed, a Takeda Company, Launches Omnaris® Nasal Spray in the UAE for the Treatment of Allergic Rhinitis 2Nycomed, a Takeda Company, Launches Omnaris® Nasal Spray in the UAE for the Treatment of Allergic Rhinitis 3Nycomed, a Takeda Company, Launches Omnaris® Nasal Spray in the UAE for the Treatment of Allergic Rhinitis 4
Phosphotyrosine IgG mouse monoclonal antibody: Alkaline Phosphatase conjugate...
... TAMRA isomers are predominantly used for labeling ... for labeling peptides and nucleotides because they ... is often required in the conjugation processes. ... for labeling peptides and proteins. 6-TAMRA is ...
anti-Lactate Dehydrogenase...
Mouse monoclonal [6E10] to LAP2 ( Abpromise for all tested applications). entrezGeneID: 7112 SwissProtID: P42166...
Biology Products: