Thursday, May 14, 2009

Abiogenesis

Chemist Shows How RNA Can Be the Starting Point for Life - NYTimes.com:

"An English chemist has found the hidden gateway to the RNA world, the chemical milieu from which the first forms of life are thought to have emerged on earth some 3.8 billion years ago.

He has solved a problem that for 20 years has thwarted researchers trying to understand the origin of life — how the building blocks of RNA, called nucleotides, could have spontaneously assembled themselves in the conditions of the primitive earth. The discovery, if correct, should set researchers on the right track to solving many other mysteries about the origin of life. It will also mean that for the first time a plausible explanation exists for how an information-carrying biological molecule could have emerged through natural processes from chemicals on the primitive earth.

The author, John D. Sutherland, a chemist at the University of Manchester, likened his work to a crossword puzzle in which doing the first clues makes the others easier."

I like his theory as it takes place in the warm puddles that life like us should start in. The high energy source is UV rather than geothermal which again makes more sense for surface life. A major step in the right direction as it gives a plausible pathway to RNA.

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