Life's First Spark Re-Created in the Laboratory
Added: Wed, 13 May 2009 23:00:00 UTC
Thanks to Shaden for the link.
A fundamental but elusive step in the early evolution of life on Earth has been replicated in a laboratory.
Researchers synthesized the basic ingredients of RNA, a molecule from which the simplest self-replicating structures are made. Until now, they couldnât explain how these ingredients might have formed.
âItâs like molecular choreography, where the molecules choreograph their own behavior,â said organic chemist John Sutherland of the University of Manchester, co-author of a study in Nature Wednesday.
RNA is now found in living cells, where it carries information between genes and protein-manufacturing cellular components. Scientists think RNA existed early in Earthâs history, providing a necessary intermediate platform between pre-biotic chemicals and DNA, its double-stranded, more-stable descendant.
RNA world easier to make - Nature
Molecule of life emerges from laboratory slime - New Scientist
HOW RNA GOT STARTED - Science News
Found: the origin of life - The Independent
Chemist Shows How RNA Can Be the Starting Point for Life - NY Times
Drew Berry - YouTube - dprjones 15 Comments
An exploration of what a signal transduction would 'look like' if you were to follow the chain of molecular events along a pathway
- - Science Daily 22 Comments
Researchers led by Professor Lee Cronin at the University of Glasgow have developed inorganic chemical cells (iCHELLs), which show redox activity, chirality, as well as selective permeability towards small molecules, and which can be nested within one another, potentially allowing stepwise reactions to occur in sequence within the cell.
- - BBC News - Science and Environment 8 Comments
While single atoms of oxygen have been found alone or incorporated into other molecules, the oxygen molecule - the one we breathe - had never been seen [in space].