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We have seen in this chapter, for example, that a molecule of RNA is the catalyst for the peptidyl transferase reaction that takes place on the ribosome. The unique potential of RNA molecules to act both as information carrier and as catalyst forms the basis of the RNA world hypothesis.
1 Δεκ 2023 · Three major evolutionary processes along the path from the RNA World to the RNA-protein World may have direct relevance to modern biological codes. The key concept here is the adapters that bring together two groups of functionally and chemically distinct molecules into a unified functional ensemble.
11 Νοε 2014 · This paper brings together a wide range of theories and models of RNA evolution and clearly explains the issues from evolutionary theory.
6 Ιουλ 2022 · The RNA world hypothesis — which postulates that RNA with both genetic information and catalytic activity had an essential role in the origin of life — is now supported by many scientists.
5 Οκτ 2015 · The RNA World is a proposed primitive biochemistry dominated genetically and functionally by RNA (Figure 1). Its existence was proposed in the 1960s [3–5], based on the centrality of RNA and RNA-like cofactors in modern metabolism, as well as the observation that RNA could fold into complex three-dimensional structures reminiscent of proteins.
1 Νοε 2017 · The flow of information from DNA to RNA to protein is thought to have evolved out of a simpler evolutionary period when genetic information was stored and transmitted solely by RNA molecules. This theory, known as the ‘RNA world hypothesis’, posits that an RNA enzyme or ‘ribozyme’ capable of copying RNA molecules existed early in ...
The RNA world. Biologists used to view RNA as a lowly messenger — the molecule that carries information from DNA to the protein-building centers of the cell. But discoveries since the early 1980s have shown that RNA can do much more.
