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Every living cell on earth carries a molecular fossil: the ribosome. In a recent paper published in PNAS, researchers from California open the drawer and dust off this ancient molecular machine. The structure of the ribosome seems to provide hints about the origin of that universal feature of life: the genetic code. The genetic code is [...] Update 01-03-2010: Be sure to check the plant edition of Evolving Molecular Machines over at Lab Rat’s blog! This is a story about an event that took place 2 billion years ago. With the benefit of hindsight and a great deal of human bias, we could argue that it was one of the pivotal moments [...] |
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