Navigation Links
Microbial hair: It's electric
Date:10/11/2010

Some bacteria grow electrical hair that lets them link up in big biological circuits, according to a University of Southern California biophysicist and his collaborators.

The finding suggests that microbial colonies may survive, communicate and share energy in part through electrically conducting hairs known as bacterial nanowires.

"This is the first measurement of electron transport along biological nanowires produced by bacteria," said Mohamed El-Naggar, assistant professor of physics and astronomy at the USC College of Letters, Arts and Sciences.

El-Naggar was the lead author of a study appearing online next week in Proceedings of the National Academy of Sciences.

Knowing how microbial communities thrive is the first step in finding ways to destroy harmful colonies, such as biofilms on teeth. Biofilms have proven highly resistant to antibiotics.

The same knowledge could help to promote useful colonies, such as those in bacterial fuel cells under development at USC and other institutions.

"The flow of electrons in various directions is intimately tied to the metabolic status of different parts of the biofilm," El-Naggar said. "Bacterial nanowires can provide the necessary links for the survival of a microbial circuit."

A bacterial nanowire looks like a long hair sticking out of a microbe's body. Like human hair, it consists mostly of protein.

To test the conductivity of nanowires, the researchers grew cultures of Shewanella oneidensis MR-1, a microbe previously discovered by co-author Kenneth Nealson, Wrigley Professor of Geobiology at USC College.

Shewanella tend to make nanowires in times of scarcity. By manipulating growing conditions, the researchers produced bacteria with plentiful nanowires.

The bacteria then were deposited on a surface dotted with microscopic electrodes. When a nanowire fell across two electrodes, it closed the circuit, enabling a flow
'/>"/>

Contact: Carl Marziali
marziali@usc.edu
213-740-4751
University of Southern California
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Paratek to Present Clinical Data at the 50th Interscience Conference on Antimicrobial Agents and Chemotherapy
2. Ansell Launches Worldss First Antimicrobial Surgical Glove
3. New AccuPRO-ID™ Microbial Identification Testing Service
4. The toxicity of antimicrobial silver in products can be reduced
5. SynCo Bio Partners Signs New Manufacturing Agreements to Supply the US Market; Securing its Position as a Market Leader in Microbial Biopharmaceutical Contract Production
6. Microban Signs Exclusive Agreement with Sharp Electronics to Launch Calculators with New Microban(R) 3G Silver(TM) Antimicrobial Technology
7. RB Rubber Introduces Environmentally Friendly Antimicrobial Rubber Flooring Products
8. New Antimicrobial Webs Sterilize Medical Implants for 14 Days
9. Novexel Presents 16 Posters and one Slide Presentation at the 49th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) Meeting in San Francisco
10. BioNeutrals Ygiene(TM) Hospital Grade Antimicrobial Proven To Be Completely Inert to Steel In Independent Corrosion Testing
11. Microban Partners With YogaDirect.com to Launch Yoga Mats With Zinc Antimicrobial Technology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/17/2014)... , Sept. 17, 2014 Hussey ... of MD-Cu 29 antimicrobial copper, announces Gilmour Academy ... to the first EPA-registered antimicrobial solid touch surface to ... is a reasonably priced surface that kills greater than ... hours of exposure. 1 , ...
(Date:9/17/2014)... 17 de septiembre de 2014  Cryoport, ... proveedor mundial de soluciones logísticas avanzadas criogénicas ... la vida, anunció hoy la contratación de ... con sede en Rótterdam, Países Bajos, para ... Europa en rápido crecimiento. Según los términos ...
(Date:9/17/2014)... (PRWEB) September 17, 2014 The ... committed to lowering the barriers to innovation in ... the appointment of Carmen Nitsche as Executive Director ... to expand its global reach. , Carmen joins ... Vice President, Corporate Development. At Accelrys, she managed ...
(Date:9/16/2014)... SAN DIEGO , Sept. 16, 2014  Biocom, ... life science community, recognizes the 9 th ... to the value of IT technologies in improving our ... California is one of the world,s most ... from EHRs to mobile health applications to genomic testing ...
Breaking Biology Technology:Innovative Gilmour Academy Ice Arena changes more than 200 fixtures to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 2Innovative Gilmour Academy Ice Arena changes more than 200 fixtures to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 3Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 2Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 3Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 4Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 5Pistoia Alliance Expands Business Development with Appointment of Carmen Nitsche 2Biocom Recognizes National Health IT Week 2
... single-atom-thick sheet of carbon, holds remarkable promise for ... in industry, however, depends upon how graphene is ... Graphene consists of a hexagonal lattice of carbon ... of atoms along the edges of the lattice ...
... be announcing the availability of the LAN Based ... retractable, wall-mounted WorkStations at the 2009 HIMSS Conference ... and streamlines making user and lock changes and ... locking system can be ordered with Proximity Systems, ...
... Fla., Feb. 16 Sirion Therapeutics, Inc., a ... it has entered into an agreement with Advanced ... co-promote, within the U.S., AVR,s new MacuTrition(R) oral ... Convenience Kit for meibomian gland therapy. AVR is ...
Cached Biology Technology:Scientists prove graphene's edge structure affects electronic properties 2Proximity Systems' LAN Based Electronic Lock Management System Offers Increased Security, Efficiency and Reporting Capability for Wall-Mounted WorkStations 2Sirion Therapeutics Partners With Advanced Vision Research (TheraTears(R)) to Promote Products for Retinal and Meibomian Gland Health 2Sirion Therapeutics Partners With Advanced Vision Research (TheraTears(R)) to Promote Products for Retinal and Meibomian Gland Health 3
(Date:9/16/2014)... Johns Hopkins neuroscientists have discovered the "molecular brakes" that ... ear cochleas of mice. These "hair cells" translate sound ... brain and are interpreted as sounds. If the arrangement ... , A summary of the research will be published ... 16. , "The proteins Hey1 and Hey2 act as ...
(Date:9/16/2014)... EUGENE, Ore. -- Each tree species has its own ... researchers and colleagues from other institutions who studied the ... growing on a Panamanian island. , "This study demonstrates ... plant families and with different ecological strategies possess very ... Steven W. Kembel, a former postdoctoral researcher in the ...
(Date:9/16/2014)... viruses, bacteria, and their environment is becoming ever ... Matthew Sullivan, associate professor in the University of ... Steven Hallam from the University of British Columbia ... of nutrient and energy cycles that power the ... so are the environments these bacteria live in, ...
Breaking Biology News(10 mins):Hey1 and Hey2 ensure inner ear 'hair cells' are made at the right time, in the right place 2Microbiome research shows each tree species has a unique bacterial identity 2New research decodes virus-host interactions in ocean dead zones 2New research decodes virus-host interactions in ocean dead zones 3
... Springer journal Advances in Atmospheric Sciences (AAS) ... by ScienceWatch.com. According to Essential Science Indicators SM ... 764 papers cited a total of 1,658 times between ... Advances in Atmospheric Sciences was launched in ...
... Sentry, a newly developed robot capable of diving ... the ocean, has been successfully completed by scientists ... (WHOI) and the University of Washington (UW). ... deep-water sites for seafloor instruments that will be ...
... Ind. - Researchers have harnessed the sensitivity of days-old ... a range of harmful chemicals. By measuring rates ... to contaminants and stressful conditions, the technology could reveal ... they cause more obvious and substantial harm. It could ...
Cached Biology News:Robot vehicle surveys deep sea off Pacific Northwest 2Robot vehicle surveys deep sea off Pacific Northwest 3Using live fish, new tool a sentinel for environmental contamination 2Using live fish, new tool a sentinel for environmental contamination 3
The 50 ml Magnetic Separation Rack is designed to be used for small-scale separations using magnetic particles. ,Capacity: four 50 ml tubes. ,Magnets: Neodymium rare earth permanent magnets....
ChIP-GLAS kit for H10K-B microarray chips. Contains ChIP kit, GLAS kit, and hybridization kit. Additional reagents are required. Please see manual for details. Contains sufficient reagent for 20 reac...
...
...
Biology Products: