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Open AccessArticle

Footprints of a Singular 22-Nucleotide RNA Ring at the Origin of Life

Laboratory AGEIS EA 7407, Faculty of Medicine, University of Grenoble Alpes, 38700 La Tronche, France
Future of Research Team, SimplissimA International Research Institute, 39 rue saint Louis, 11324 Port-Louis, Mauritius
Author to whom correspondence should be addressed.
Biology 2020, 9(5), 88;
Received: 17 February 2020 / Revised: 6 April 2020 / Accepted: 19 April 2020 / Published: 25 April 2020
(This article belongs to the Special Issue Perspectives of Theoretical Medicine)
(1) Background: Previous experimental observations and theoretical hypotheses have been providing insight into a hypothetical world where an RNA hairpin or ring may have debuted as the primary informational and functional molecule. We propose a model revisiting the architecture of RNA-peptide interactions at the origin of life through the evolutionary dynamics of RNA populations. (2) Methods: By performing a step-by-step computation of the smallest possible hairpin/ring RNA sequences compatible with building up a variety of peptides of the primitive network, we inferred the sequence of a singular docosameric RNA molecule, we call the ALPHA sequence. Then, we searched for any relics of the peptides made from ALPHA in sequences deposited in the different public databases. (3) Results: Sequence matching between ALPHA and sequences from organisms among the earliest forms of life on Earth were found at high statistical relevance. We hypothesize that the frequency of appearance of relics from ALPHA sequence in present genomes has a functional necessity. (4) Conclusions: Given the fitness of ALPHA as a supportive sequence of the framework of all existing theories, and the evolution of Archaea and giant viruses, it is anticipated that the unique properties of this singular archetypal ALPHA sequence should prove useful as a model matrix for future applications, ranging from synthetic biology to DNA computing. View Full-Text
Keywords: origin of life; evolution; amino acid RNA interaction origin of life; evolution; amino acid RNA interaction
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MDPI and ACS Style

Demongeot, J.; Henrion-Caude, A. Footprints of a Singular 22-Nucleotide RNA Ring at the Origin of Life. Biology 2020, 9, 88.

AMA Style

Demongeot J, Henrion-Caude A. Footprints of a Singular 22-Nucleotide RNA Ring at the Origin of Life. Biology. 2020; 9(5):88.

Chicago/Turabian Style

Demongeot, Jacques; Henrion-Caude, Alexandra. 2020. "Footprints of a Singular 22-Nucleotide RNA Ring at the Origin of Life" Biology 9, no. 5: 88.

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