Ribosome and RNA world

11.03.2005 - New X-rays of cell's ribosome could lead to better antibiotics: "Ribosomes are found in all organisms, ranging from bacteria to humans, and probably arose nearly 2 billion years ago. They have changed so little through evolution that a bacterial ribosome can often translate human genes into protein. Some people suspect that ribosomes, which at their core consist of ribonucleic acid (RNA), a sister of the DNA that comprises our genes, arose when RNA, not DNA, carried our genetic dowry."

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