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:12/19/2014)... Dec. 18, 2014 Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ... Monitor: North America Perimeter Security Systems Market" report to ... The North American perimeter security market is estimated to ... Although the U.S. market holds a larger share in this ...
(Date:12/17/2014)... , Dec. 15, 2014 Research and Markets ... "Samsung Galaxy S5 - Home Button Synaptics Fingerprint ... http://photos.prnewswire.com/prnh/20130307/600769 Based ... 5S, Samsung introduces for the first time a fingerprint ...
(Date:12/17/2014)... Valencell, a leader in performance biometric data sensor technology, ... such as Intel, Jabra, Atlas, and Scosche to develop ... products will be showcased at CES 2015, taking place ... "Our partners choose PerformTek biometrics, because ...
Breaking Biology News(10 mins):Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was invited to ... on probiotics in San Diego, CA. , The Scripps ... health care professionals. This year’s pre-conference seminar was held on ... Dr. Leyer spoke about the emerging topics and science in ...
(Date:1/22/2015)... SAN DIEGO , Jan. 22, 2015   ... company, and Sequenom, Inc. (NASDAQ: SQNM ... a development agreement for next generation noninvasive prenatal ... Cypher,s genome interpretation technology, called Mantis™, to advance ...
(Date:12/24/2014)... 24, 2014  United Therapeutics Corporation (NASDAQ: UTHR ... MDT ) has submitted a pre-market approval application to ... use of Medtronic,s SynchroMed ® II implantable drug ... with United Therapeutics, Remodulin ® (treprostinil) Injection delivered ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 GMO corn cases ... Syngenta, are in the process of being consolidated in a ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL No. ... Kansas. , Management of the Syngenta GMO corn multidistrict litigation ...
Breaking Biology Technology:Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2
Cached News: