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:


(Date:3/28/2017)... 28, 2017 The report "Video ... Monitors, Servers, Storage Devices), Software (Video Analytics, VMS), and ... Global Forecast to 2022", published by MarketsandMarkets, the market ... is projected to reach USD 75.64 Billion by 2022, ... The base year considered for the study is 2016 ...
(Date:3/24/2017)... 2017 Research and Markets has announced the ... & Trends - Industry Forecast to 2025" report to their ... The Global ... CAGR of around 15.1% over the next decade to reach approximately ... the market estimates and forecasts for all the given segments on ...
(Date:3/22/2017)...   Neurotechnology , a provider of high-precision ... the release of the SentiVeillance 6.0 ... recognition using up to 10 surveillance, security and ... new version uses deep neural-network-based facial detection and ... a Graphing Processing Unit (GPU) for enhanced speed. ...
Breaking Biology News(10 mins):
(Date:5/21/2017)... ... May 20, 2017 , ... ... the lengthy trial and error process by finding the right antidepressant faster. ... strengthen the doctor-patient relationship through a personalized approach to treatment. , ...
(Date:5/18/2017)... ... May 16, 2017 , ... Clinical Supplies Management (“CSM”), a Great Point Partners ... to grow. CSM has doubled in size over the past six months with ... strategy. , Roger Gasper joins CSM as Chief Financial Officer. Roger has over ...
(Date:5/18/2017)... ... May 17, 2017 , ... HOLLOWAY AMERICA, ... including food and dairy, munitions, and pharmaceutical/biotech, recently introduced The Revolution Lift™, a ... use. The improvement in technology comes on the heels of HOLLOWAY’s release of ...
(Date:5/16/2017)... ... May 16, 2017 , ... ... ProxiMeta™ Hi-C metagenomic deconvolution service. ProxiMeta enables researchers to obtain complete, distinct ... research insights at lower cost. , “We’re very excited about the commercial ...
Breaking Biology Technology:
Cached News: