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A new way of using the genetic code has been created, allowing proteins to be made with properties that have never been seen in the natural world. The breakthrough could eventually lead to the creation of new or "improved" life forms incorporating these new materials into their tissue.
In all existing life forms, the four "letters" of the genetic code, called nucleotides, are read in triplets, so that every three nucleotides encode a single amino acid.
Not any more. Jason Chin at the University of Cambridge and his colleagues have now redesigned the cell's machinery so that it reads the genetic code in quadruplets (…)
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via Mathieu Favez
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