Navigation Links
Team finds a better way to watch bacteria swim
Date:10/4/2009

CHAMPAIGN, Ill. Researchers have developed a new method for studying bacterial swimming, one that allows them to trap Escherichia coli bacteria and modify the microbes' environment without hindering the way they move.

The new approach, described this month in Nature Methods, uses optical traps, microfluidic chambers and fluorescence to get an improved picture of how E. coli get around.

The microfluidic chambers provide a controlled environment in which the bacteria swim, and allow the researchers to introduce specific stimuli such as chemical attractants to see if the microbes change direction in response to that stimulus.

Optical traps use lasers to confine individual cells without impeding their rotation or the movement of their flagella. University of Illinois physics professor Yann Chemla, who co-led the study with physics professor Ido Golding, calls the optical traps "bacterial treadmills."

Movement of the bacterial cell alters the light from the laser, allowing the researchers to track its behavior.

Fluorescent markers enhance visualization of the bacteria and their flagella under a microscope.

Three to six helical flagella emerge from various points along E. coli's rod-shaped body. When they rotate in a counterclockwise fashion (as seen from behind), they gather into what looks like a coordinated bundle that pushes the bacterium forward, causing it to corkscrew through its environment. But when one or more flagella rotate in the opposite direction, they splay apart, reorienting the bacterium.

This "run and tumble" behavior has long been of interest to scientists for two reasons, Golding said. First, the elaborate mechanics of bacterial swimming "tell you a lot about biomechanics," he said. And second, "it serves as a paradigm for the way living cells process information from their environment."

Earlier studies have been unable to follow individual bacterial cells movi
'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2

Related biology news :

1. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
2. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
3. Study finds blocking angiogenesis signaling from inside cell may lead to serious health problems
4. Study finds Viagra increases release of key reproductive hormone
5. Survey finds elevated rates of new asthma among WTC rescue and recovery workers
6. St. Jude finds factors that accelerate resistance to targeted therapy in lymphoblastic leukemia
7. Study finds a high rate of asthma in college athletes
8. Ecologist finds dire devastation of snake species following floods of 93, 95
9. Men shed light on the mystery of human longevity, study finds
10. JILA finds flaw in model describing DNA elasticity
11. Americans remain pessimistic about the environment, Stanford-AP survey finds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Team finds a better way to watch bacteria swim
(Date:1/22/2015)... DUBLIN , Jan. 22, 2015 Research and ... the addition of the "Global Wearable Technologies ... Growth, Share, Overview, Trends and Forecast 2014-2020" ... Wearable Technologies are smart devices that can be ...
(Date:12/24/2014)... , Dec. 23, 2014  Since its launch in December 2014, ... to eliminate the pain of trying to remember their usernames ... biometrics fused to their smartphones. To assist people who have ... the company that created 1U and focuses on redefining identity, ...
(Date:12/22/2014)... Dec. 22, 2014  The 2014 Holiday Season may be ... Market Intelligence reports that the long anticipated floodgates for ... intensifying demand for smart phones, tablets, and wearable mobile ... of 2.5 billion users with nearly 4.8 billion biometric ...
Breaking Biology News(10 mins):Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2
... pluripotent stem cells were first derived in 2007, scientists have ... which are sourced in early-stage embryos. Both cell types ... body, but their origins in embryonic and adult tissue ... cell types have great potential in basic biological research and ...
... (Sept. 11, 2011) Richard Holbrooke, John Ritter, Lucille ... were all taken by the same silent killer: an ... at The University of Texas Health Science Center at ... found an association with a common genetic variant in ...
... University of Iowa researchers have found high levels of toxic ... Harbor and Ship Canal (IHSC) in East Chicago, Ind. Scientists ... is scheduled to be dredged in spring 2012 to maintain ... of southern Lake Michigan. The study, published online in ...
Cached Biology News:Study reveals critical similarity between two types of do-it-all stem cells 2Study reveals critical similarity between two types of do-it-all stem cells 3UTHealth, BCM researchers find common gene variant associated with aortic dissection 2UTHealth, BCM researchers find common gene variant associated with aortic dissection 3Researchers find high levels of toxic PCBs in Indiana Harbor and Ship Canal 2Researchers find high levels of toxic PCBs in Indiana Harbor and Ship Canal 3
(Date:1/22/2015)...  Transwestern | RBJ today announces the firm brokered a long-term ... a leading biopharmaceutical company, at Two Ledgemont Center in ... Richards , president, and Brian Cohen , senior vice ... building at 95 Hayden Ave. Photo - ...
(Date:1/22/2015)... laboratory information management systems market is a rapidly growing ... due to factors such as rising pressure to comply ... and increasing government support for adoption of HCIT solutions ... the market focus on technological advancements to further the ...
(Date:1/22/2015)... 22, 2015 Crystal Diagnostics (CDx) Xpress System, ... has received AOAC-PTM Certifications for the six non-O157 Shiga toxin-producing ... collectively referred to as STEC or the “Big-6”) as well ... unit (cfu) per 325 g of raw ground beef and ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 zFlo Motion ... pleased to announce an exciting product from a new partner. ... analysis solutions over the past 15 years, with offerings in ... recently, their 3D IMU system (inertial measurement unit), iSen, is ...
Breaking Biology Technology:Transwestern?RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 4Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 23D Motion Capture Just Got Easy 2
... California, September 21, ChemAxon, a software solutions provider ... ) today announced an,agreement to maintain the integration ... software suite. Agilent acquired,the Kalabie ELN from Klee ... Klee and ChemAxon to Agilent and ChemAxon. ...
... catheter-related infections, REDMOND, Wash., Sept. 20 ... to enhance the biocompatibility and,performance of current ... deal with Strategic Applications Inc. (SAI), a ... infusion devices.,Healionics, deal with SAI will fully ...
... SAN DIEGO, Sept. 20 Cadence Pharmaceuticals,Inc. (Nasdaq: ... in-licensing,developing and commercializing proprietary product candidates principally,for use ... company,s,President and CEO Theodore Schroeder will present the ... am Eastern Time (8:30 am Pacific,Time) during the ...
Cached Biology Technology:ChemAxon and Agilent Technologies Sign Agreement Extending JChem Integration With Kalabie Electronic Lab Notebook 2Healionics Corporation Announces Partnership to Develop and Distribute STARcuff(TM) 2Cadence Pharmaceuticals' CEO Theodore Schroeder to Present at UBS 2007 Global Life Sciences Conference 2
...
Mouse monoclonal antibody to UGT2B10 - UDP glucuronosyltransferase 2 family, polypeptide B10...
Mouse monoclonal antibody raised against a partial recombinant WDR5. NCBI Entrez Gene ID = WDR5...
Mouse polyclonal antibody raised against a partial recombinant COASY. NCBI Entrez Gene ID = 80347...
Biology Products: