HOME >> BIOLOGY >> NEWS
Gene vital to radiation resistance in bacteria

NEW ORLEANS January 31, 2003 -- Researchers from Louisiana State University have identified a gene in the radiation-resistant bacterium Deinococcus radiodurans that they believe is vital to the organism's ability to withstand high levels of radiation. They report their findings today at the 3rd ASM/TIGR Conference on Microbial Genomes.

"When this gene (irrE) is not functional you have a very sensitive organism," says Ashlee Earl, a lead researcher on the study. "At a dose of radiation that would not normally kill D. radiodurans, there is less than .001 percent survival without irrE."

With a name that literally means "strange berry that can withstand radiation," D. radiodurans is the world's most radiation resistant organism, able to survive up to 1.5 million rads, over 1000 times more radiation than practically any other organism. For reference, 1000 rads is enough to kill the average human.

For decades scientists have been trying to figure out what makes it so hard to kill. Understanding how this bacterium survives such extreme conditions could help researchers with everything from cleaning up nuclear waste sites to preventing cancer.

To better define the mechanisms used by the bacterium to resist radiation, Earl and her team, which included researchers from The Institute for Genomic Research (TIGR), studied a mutant strain of D. radiodurans that could not survive high radiation levels. This strain carried mutations on two genes, one of which was irrE. When the irrE gene was restored, the bacterium was once again resistant to radiation, a finding that suggested the gene was responsible, at least in some part, for resistance.

Further study of irrE suggested that the gene is not directly responsible for DNA repair following radiation exposure but instead it controls other genes that are known in other organisms to be associated with DNA repair. It's role is also not specific to radiation. The gene is responsible in some part for D.
'"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
31-Jan-2003


Page: 1 2

Related biology news :

1. Medication reconciliation, pharmacist involvement vital to reducing medication errors, study finds
2. Education, monitoring vital for sport-fish eaters
3. Life goes on without vital DNA
4. Rb2 expression could play vital role in ovarian cancer Temple University researchers find
5. Vascular access vital to pump up tissue engineering
6. Study links amyloid plaques in Alzheimers brains to genes vital to normal memory
7. Family communication about hereditary disease vital to prevention
8. St. Jude researchers show that the Six3 gene is vital in the creation of the brains complexity
9. Wheat may be vital in battle against cancer and other diseases
10. Researchers describe atomic-size sorter that performs vital cellular function
11. Stem cell research is vital to finding cures for blinding diseases

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Gene vital radiation resistance bacteria

(Date:11/15/2014)...  While we may still be a few years away ... Trek" to gain instant access to all that ailed his ... and tablets for monitoring and measuring our health are cropping ... seem a tad Orwellian to some, but a new survey ... technological opportunities into their healthcare regime. These are ...
(Date:11/11/2014)... -- Forensicon, Inc., a Chicago -based digital ... promotion of Yaniv Schiff from Senior Computer ... new role as Director, he will lead company efforts ... and provide leadership within the company,s digital forensics practice ... Schiff joined Forensicon in 2006 and ...
(Date:11/7/2014)... led by Dr. Debra Auguste, associate professor, biomedical ... The City College of New York, have identified ... for one of the most aggressive forms of ... have a high mortality rate owing to aggressive ... therapeutic options. However, Professor Auguste,s team, discovered the ...
Breaking Biology News(10 mins):Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2
(Date:11/22/2014)... 2014  The element of surprise has been a ... strike without warning. Until now, epidemiologists had nothing to ... outbreak, resulting in suboptimal responses to both the H1N1 ... Photo - http://photos.prnewswire.com/prnh/20141121/160242 ... because virus gene structural changes have been found that ...
(Date:11/21/2014)... England , Nov. 21, 2014   TRU-D SmartUVC ... will feature their superbug-killing UVC automated disinfection robot, TRU-D SmartUVC, ... this week from Nov. 23 to 26 at Stand 23. ... is the United Kingdom,s largest infection-related ... infection prevention societies to one of the leading events of ...
(Date:11/21/2014)... (PRWEB) November 20, 2014 Author Matthew ... Walk to the Other Side” published as a ... Finalist in the “Fiction: Short Story” category of the ... Keen, President and CEO of USA Book News, said ... and independent publishers, including Simon & Schuster, Penguin, John ...
(Date:11/21/2014)... 20, 2014 The November 2014 issue ... an open access journal featuring the following articles:, ... to preserve photoresponsiveness in the retina , ... situ hybridization using chromogenic substrates in zebrafish , ... and protein electrophoresis , Nuclear LC3-positive puncta ...
Breaking Biology Technology:Viruses' Advantage of Surprise is Lost 2TRU-D SmartUVC to Showcase Superbug-Killing Robot at FIS 2014 2TRU-D SmartUVC to Showcase Superbug-Killing Robot at FIS 2014 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 2BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 3
Cached News: