Navigation Links
Weighty viruses

Viruses are the simplest life forms on our planet, consisting of only DNA or RNA and a shell. After the prokaryotes (bacteria and archebacteria), viruses are the second most common type of organism. In our oceans they are the most common life form. In order to gain a better understanding of the structure and characteristics of these genetically varied little organisms, it would be highly useful to be able to determine their masses and how much these vary within a given population. Researchers in Taiwan have now used very gentle ionization techniques and a miniaturized ion trap of their own devising to accurately analyze the masses of individual, intact viruses.

Previous methods for determining the masses of viruses had a margin of error of ±15%, which made them too inaccurate to ensure the resolution of small differences in mass. A team led by Huan-Cheng Chang has developed a new concept to attain higher precision. In order to determine their mass, viruses must first be converted to the gas phase, given an electric charge, and accelerated in an electric field. However, this process must leave the viruses intact. The researchers thus chose to use a very gentle method known as LIAD (laser-induced acoustic desorption). The virus particles are released from the sample by laser-induced sound waves. They are then caught in an “ion trap? This is an electric field that holds charged particles prisoner by means of its special geometry and alternating voltage. Once trapped, the virus particles are ready for mass determination. Laser light is beamed into the ion trap. If a particle is present, it scatters the light. The scattered light can be detected through the transparent surfaces of the ion trap. A portion of the light is sent to a CCD camera, which records the flight path of the trapped particle. The rest of the light goes to a measuring device that precisely analyzes the scattering signal. The scattered light is different from the initial light beam because the vi
'"/>

Source:John Wiley & Sons, Inc.


Page: 1 2

Related biology news :

1. Columbia scientists develop cancer terminator viruses
2. Researchers report breakthrough against world’s deadliest viruses
3. UF scientist finds unexpected link between cat and human AIDS viruses
4. Agricultural workers at increased risk for infection with animal flu viruses
5. Novel virus entry mechanism could lead to new drugs against poxviruses
6. MIT researchers build tiny batteries with viruses
7. Revolution in the fight against cancer & viruses
8. Molecular on/off switch controls immune defenses against viruses
9. Silver bullet: UGA researchers use laser, nanotechnology to rapidly detect viruses
10. Molecular signature protects cells from viruses
11. Anti-herpes treatment reduces HIV levels in women infected with both viruses
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Weighty viruses

(Date:12/22/2014)... 22, 2014 Research and Markets ... addition of the "The Global Watermarking ... offering. http://photos.prnewswire.com/prnh/20130307/600769 ... overview of the global digital media watermarking ... and monitor piracy by securely and invisibly ...
(Date:12/19/2014)... 2014   LaunchKey , the first decentralized mobile ... Internet of Things era, today announced the close of ... was led by Metamorphic Ventures with participation from ENIAC ... and others.  LaunchKey has raised $4 million to date, ... team and bring LaunchKey to market in 2015. ...
(Date:12/17/2014)... , Dec. 16, 2014 Research and Markets ... addition of the "Global Chemical Sensor Market ... http://photos.prnewswire.com/prnh/20130307/600769 One ... increasing demand for medical sensors in biomedical applications. ... for quick and correct diagnosis during surgical procedures. ...
Breaking Biology News(10 mins):The Global Watermarking and Fingerprinting Markets 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
... FORT COLLINS - In the last 50 years, modern ... of today,s veterinary and human medicine students still hone ... pig,s feet before transitioning to a live patient. An ... artificial body parts that look, feel, behave, and even ...
... been at least a billion years since plants and ... eons shared a common threat in the form of ... in remarkably similar mechanisms for detecting the molecular signatures ... treatment of infectious diseases in humans. The recognition ...
... produce many antibodies against the protein encapsulating the virus, most ... A new study suggests why some of the most common ... a form it takes after the virus has already invaded ... Hospital Boston and their colleagues. The findings, published ...
Cached Biology News:Invention helps students learn surgical techniques before operating on patients 2Reading the signs: Plants and animals found common ground in response to microbial threats 2Designing more effective anti-HIV antibodies 2Designing more effective anti-HIV antibodies 3
(Date:12/24/2014)... GMO corn cases filed across the ... in the process of being consolidated in a Kansas ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL ... District of Kansas. , Management of the Syngenta GMO ... U.S. District Judge John W. Lungstrum.* , As a ...
(Date:12/24/2014)... December 23, 2014 According to Ross Selinger, ... Affiliate of ITRA Global, the national office market continues to ... This is evidenced by the third quarter’s surprising 3.9% ... Low energy costs have held inflation down and the ... is the housing market remaining soft. , This solid economic ...
(Date:12/24/2014)... Diego, CA (PRWEB) December 23, 2014 ... where their Twitter followers can submit their #HolidayInTheLab ... themselves and their lab mates. , For those struggling ... lab mates, the Pipette.com Holiday in the Lab Contest ... Pipette.com Twitter followers to send pictures of ...
(Date:12/24/2014)... 2014 Sigma-Aldrich Corporation (NASDAQ: ... under the Hart-Scott-Rodino Antitrust Improvements Act (HSR Act) ... 22, 2014, thereby completing the U.S. HSR Act ... of the Company by Merck KGaA, Darmstadt, Germany.  ... condition to closing the transaction, which remains subject ...
Breaking Biology Technology:Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 3Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3
... Recognized for Development of Statistical Methods and SoftwareSAN DIEGO, ... and of Health Research & Policy at Stanford ... Academy of Sciences. Election to the National Academy ... can be accorded to a scientist in the US ...
... published,today in the online edition of Nature Genetics, scientists ... from Iceland, Denmark and the,Netherlands present the discovery of ... (SNPs) that influence the age of girls at menarche, ... by both genetic,and environmental factors, though the SNPs reported ...
... naturally occurring elements, add another to the list of those ... physics in Arts & Sciences at Washington University in St. ... the time discovered that europium becomes superconducting at 1.8 ... making it the 53rd known elemental superconductor and the 23rd ...
Cached Biology Technology:Professor Wing Wong Elected to the National Academy of Sciences 2deCODE Study Shows Complex Interplay of the Human Biological Clock With Height, Weight and Disease 2deCODE Study Shows Complex Interplay of the Human Biological Clock With Height, Weight and Disease 3deCODE Study Shows Complex Interplay of the Human Biological Clock With Height, Weight and Disease 4Europium discovery 2Europium discovery 3