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Monday, February 14, 2005

Gain and loss of amino acids through evolution

A purely computational (bioinformatic?) paper in Nature. They make the claim that several amino acids are being gained and several are being lost throughout the different branches in the tree of life. The idea is that there was the original subset of amino acids that were in use early on (3.4bn years ago) and the others were added later -- those are the ones that are still being accrued.


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