Life from Chemistry looks more likely

A recent paper in the publication PNAS shows that the particular 20 amino-acids that are involved in life processes have a natural tendency to react together to produce peptide-bonded chains i.e. proteins. This compares with the hundreds of other possible amino-acids that do not display this natural tendency. The implication of course is that the origins of life naturally flow from chemistry rather than requiring serendipitous and rare or unusual events.
One qualification to this proposition is that the experiments only involved a subset of the bio amino-acids and more work needs to be done to demonstrate that this is a general principle for all 20 bio amino-acids. However this makes a lot of sense and it will be interesting to see if a similar principle is evident for nucleic acids.

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