DURHAM, N.C. - A new study could explain why DNA and not RNA, its older chemical cousin, is the main repository of genetic information. The DNA double helix is a more forgiving molecule that can ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 86, No. 24 (Dec. 15, 1989), pp. 9687-9691 (5 pages) To show conclusively that the critical structural deformation ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 87, No. 24 (Dec., 1990), pp. 9858-9862 (5 pages) A Lys-84 → Cys mutant staphylococcal nuclease was selectively ...
Billions of years ago, when the Earth was in its infancy and biology hadn't even gotten going, the precursors to the first living organisms were probably self-replicating strands of RNA. Scientists ...
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