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Cheating DNA Death: How an Extremophile Repairs Shattered Chromosomes
Scientific American ^ | September 27, 2006 | David Biello

Posted on 09/27/2006 10:40:02 PM PDT by SunkenCiv

Fifty years ago, scientists uncovered a microbe capable of withstanding radiation in canned meat that had been bombarded with gamma rays. Named Deinococcus radiodurans -- or "strange berry that withstands radiation" [pictured at right] -- the microorganism can survive doses of radiation up to 500 times that which would kill a human. These doses shatter D. radiodurans's DNA -- just as they would in a human -- but the microbe can repair its broken DNA and spring back to life within hours, depending on the dose. Researchers in France have finally determined how the most durable of extremophiles manages this trick. "We have discovered the mechanism by which a clinically dead cell resurrects back to life," explains Miroslav Radman of INSERM, France's public biomedical research institution. "This extreme radiation resistance is but a by-product of its selection for resistance to desiccation."

(Excerpt) Read more at sciam.com ...


TOPICS: Astronomy; Science
KEYWORDS: panspermia; xplanets
Or, it came from space. :')

1 posted on 09/27/2006 10:40:04 PM PDT by SunkenCiv
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Tough Little Microbe May Be Martian
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http://www.freerepublic.com/focus/f-news/757147/posts

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Astronomy Picture of the Day 9-30-02
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Beyond the Fish Wars (Intelligent Design is Bad Theology)
San Francisco Gate | 8/25/2005 | Rev. Jim Burklo
Posted on 08/25/2005 6:17:05 PM EDT by curiosity
http://www.freerepublic.com/focus/f-news/1470799/posts
[mentioned in this fascinating post]
119 posted on 08/26/2005 1:15:19 PM EDT by Ma3lst0rm
http://www.freerepublic.com/focus/f-news/1470799/posts?page=119#119


2 posted on 09/27/2006 10:40:18 PM PDT by SunkenCiv (updated my FR profile on Saturday, September 16, 2006. https://secure.freerepublic.com/donate/)
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To: annie laurie; garbageseeker; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; mikrofon
a bit of a stretch for the X-Planets list, actually pertains to panspermia, really, but hey, could have come from a long way off. :')

· X-Planets ping list · join · view topics · view or post blog · bookmark ·

3 posted on 09/27/2006 10:41:50 PM PDT by SunkenCiv (updated my FR profile on Saturday, September 16, 2006. https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Or, it came from space.

--

Remulak, perhaps.

--

4/4/2006
Conan the Bacterium: The Ancient Microscopic Hero
http://chaoticutopia.com/wp/?p=254


4 posted on 09/27/2006 10:48:16 PM PDT by NormsRevenge (Semper Fi ......Help the "Pendleton 8' and families -- http://www.freerepublic.com/~normsrevenge/)
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To: NormsRevenge

...or Oozamalak...


5 posted on 09/27/2006 10:55:21 PM PDT by SunkenCiv (updated my FR profile on Saturday, September 16, 2006. https://secure.freerepublic.com/donate/)
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To: SunkenCiv
It's past my bedtime and I need to bike into work tomorrow. (20 miles, 1-way).

And you post THIS, knowing I'll have to stay up and read it.

You...you...SCOUNDREL!

(Keep up the good work!)

Cheers!

6 posted on 09/27/2006 11:27:07 PM PDT by grey_whiskers
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