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Deinococcus radiodurans

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Marlin:
Deinococcus radiodurans (Radiation resistant bacteria) can survive 100 times the radiation dose of other bacteria putting them in the realm of extremophile along with the bacteria that live in the high tempratures of hot springs.

Why are D. radiodurans more resistant to radiation that other bacteria. (Answer in a week if needed)

Marlin:

--- Quote from: honeycomb on Jan 03, 2008, 03:50 ---Because it copies and repairs its structure (like DNA) better than any other bacteria.

I don't need now stinking Biology Degree......hehehehe

Common sense. 

--- End quote ---

Tsk Tsk and why would that be? DNA for all lifeforms deviate by only a small fraction.

Rad Sponge:
Actually Honey, you are on target.

From Wikipedia.org

"Deinococcus accomplishes its resistance to radiation by having multiple copies of its genome and rapid DNA repair mechanisms. It usually repairs breaks in its chromosomes within 12-24 hours through a 2-step process. First, D. radiodurans reconnects some chromosome fragments through a process called single-strand annealing. In the second step, a protein mends double-strand breaks through homologous recombination. As a consequence of its hardiness it has been nicknamed "Conan the Bacterium" (after Conan the Barbarian)."

http://en.wikipedia.org/wiki/Deinococcus_radiodurans

Marlin:

--- Quote from: Jason-YP on Jan 03, 2008, 05:21 ---Actually Honey, you are on target.

From Wikipedia.org

"Deinococcus accomplishes its resistance to radiation by having multiple copies of its genome and rapid DNA repair mechanisms. It usually repairs breaks in its chromosomes within 12-24 hours through a 2-step process. First, D. radiodurans reconnects some chromosome fragments through a process called single-strand annealing. In the second step, a protein mends double-strand breaks through homologous recombination. As a consequence of its hardiness it has been nicknamed "Conan the Bacterium" (after Conan the Barbarian)."

http://en.wikipedia.org/wiki/Deinococcus_radiodurans


--- End quote ---


Yes that is the process common to all cells, what makes D radiodurans different.

Marlin:

--- Quote from: honeycomb on Jan 03, 2008, 05:26 ---They come after 'C radiodurans'...........(thats a joke Marlin ... because I haven't a clue)

--- End quote ---

You need Blue to help you find the clues (those with kids will get this reference).

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