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“While self-replicating molecules are essential for life, they are only a part of the whole, chemist Ramanarayanan Krishnamurthy, who led a study recently published in Angewandte Chemie, tells SYFY WIRE. With this caveat, when you try to answer the question when exactly life came to be, it would have to be understood that there needs to be a catalyst or sets of catalysts that enabled a sustainable self-replication process. Enzymes are the catalysts that cause strands of DNA and RNA to split and replicate themselves in existing life-forms. There is just one problem. Before anything ever lived on Earth, these catalysts didn’t yet exist. DNA and RNA are not able to self-replicate that well on their own because the way they stick together inhibits the splitting of double strands. For example, a single strand of RNA acts as a sort of template. It has no problem attracting individual parts that attach themselves to it to form an identical strand.

Ramanarayanan krishnamurthyRam krishnamurthyAngewandte chemiePrebiotic chemistryரேம் கிருஷ்ணமூர்த்தி