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Natural affinities of RNA components could have led to life

vinces99 (2792707) writes | about 9 months ago

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vinces99 (2792707) writes "The chemical components crucial to the start of life on Earth may have primed and protected each other in never-before-realized ways, according to new research led by University of Washington scientists. That could mean a simpler scenario for how that first spark of life on the planet came about.

Scientists have long thought that life started when the right combination of bases and sugars produced self-replicating ribonucleic acid, or RNA, inside a rudimentary "cell" composed of fatty acids. Under the right conditions, fatty acids naturally form into bag-like structures similar to today's cell membranes. In testing one of the fatty acids representative of those found before life began – decanoic acid – the scientists discovered that the four bases in RNA bound more readily to the decanoic acid than did the other seven bases tested. By concentrating more of the bases and sugar that are the building blocks of RNA, the system would have been primed for the next steps, reactions that led to RNA inside a bag."

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