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:7/13/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... focused on the growing mobile commerce market, announced ... for BEHAVIORAL-DIRECTED AUTHENTIATION METHOD AND SYSTEM. ... secure method to make payments.  With this patent, ... with its groundbreaking voice-direct payment patent application, with ...
(Date:7/9/2015)... 2015  Unchained Labs just can,t get enough ... Avid Nano. Avid Nano designs, develops and manufactures ... Also today, Unchained Labs UNcaged the ... use protein sizing system. The pUNk is a ... size, size distribution, aggregation population and molecular weight. ...
(Date:7/8/2015)... , N.J. and NEW YORK , ... and Guidepoint today announced BD & ... healthcare companies with free access to Guidepoint,s expert network ... start-ups that are developing cutting-edge technologies to improve healthcare ... dedicated Guidepoint research manager, each start-up entrepreneur will be ...
Breaking Biology News(10 mins):NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3
(Date:7/30/2015)... , ... July 30, 2015 , ... ... advanced fluid applications and designed for continuous operation up to 1500 bar. The ... ensuring safety, efficiency, and preventing toxic contamination. , The Pony™ NS2006L homogenizer is ...
(Date:7/29/2015)... CER / 20% of sales) led the regional performance in the second quarter ... as solid contributions from Korea, India and ... / Africa (Q2 2015: +3% CER / ... Turkey and the United Kingdom . The Americas ... sales, on demand across all customer classes. The top seven emerging markets (Q2 ...
(Date:7/29/2015)... 29, 2015 Research ... addition of the "Global Biosimilars Market, 2015 ... The Global Biosimilars Market, 2015 - 2025, ... growing biosimilars market. With the blockbuster biologics losing ... costs, biosimilars are being viewed as viable substitutes ...
(Date:7/29/2015)... July 29, 2015  Indivior PLC (LON: INDV) today ... nasal spray was accepted and received Priority Review by ... treatment of opioid overdose. This naloxone nasal spray comes ... for optimal absorption into the nasal mucosa. 1 ... so individuals may be better equipped to help an ...
Breaking Biology Technology:GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5
Cached News: