ArticleNucleic acids research2019
Selection of self-priming molecular replicators.
Article in Nucleic acids research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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3 authors.
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Abstract
Self-priming amplification of oligonucleotides is possible based on foldback of 3' ends, self-priming, and concatemerization, especially in the presence of phosphorothioate linkages. Such a simple replicative mechanism may have led to the accumulation of specific replicators at or near the origin of life. To determine how early replicators may have competed with one another, we have carried out selections with phosphorothiolated hairpins appended to a short random sequence library (N10). Upon the addition of deoxynucleoside triphosphates and a polymerase, concatemers quickly formed, and those random sequences that templated the insertion of purines, especially during initiation, quickly predominated. Over several serial transfers, particular sequences accumulated, and in isolation these were shown to outcompete less efficient replicators.
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