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- W2904583072 abstract "The feasibility of self-assembly of a translation system from prebiotic random RNA chains is a question that is central to the ability to conceive life emerging by natural processes. The spontaneous materialization of a translation system would have required the autonomous formation of proto-transfer RNA (tRNA) and proto-ribosome molecules that are indispensable for translating an RNA chain into a polypeptide. Currently, the vestiges of a non-coded proto-ribosome, which could have only catalyzed the formation of a peptide bond between random amino acids, is consensually localized in the region encircling the peptidyl transferase center of the ribosomal large subunit. The work presented here suggests, based on high resolution structures of ribosomes complexed with messenger RNA (mRNA) and tRNAs, that three types of L-shaped RNA building blocks derived from the modern ribosome, alongside with an L-shaped proto-tRNA, each composed of about 70-mer, could have randomly occurred in the prebiotic world and combined to form a simple translation system. The model of the initial coded proto-ribosome, which includes the active sites of both ribosomal subunits, together with a bridging element, incorporates less than 6% of the current prokaryotic rRNA, yet it integrates all of the ribosomal components that are vital for synthesizing the earliest coded polypeptides." @default.
- W2904583072 created "2018-12-22" @default.
- W2904583072 creator A5080908408 @default.
- W2904583072 date "2018-12-12" @default.
- W2904583072 modified "2023-09-28" @default.
- W2904583072 title "Hypothesis: Spontaneous Advent of the Prebiotic Translation System via the Accumulation of L-Shaped RNA Elements" @default.
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- W2904583072 doi "https://doi.org/10.3390/ijms19124021" @default.
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