ArticleJournal of molecular evolution2014
Proline might have been the first amino acid in the primitive genetic code.
Article in Journal of molecular evolution, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Article
- Origin of the Genetic Code Is Found at the Transition between a Thioester World of Peptides and the Phosphoester World of Polynucleotides.Life (Basel, Switzerland) · 2019Article
- Origins and Early Evolution of the tRNA Molecule.Life (Basel, Switzerland) · 2015Review
- Beyond the Frozen Accident: Glycine Assignment in the Genetic Code.Journal of molecular evolution · 2015Article
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Authors and funding
4 authors.
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Abstract
Stereochemical assignment of amino acids and corresponding codons or anticodons has not been successful so far. Here, we focused on proline and GGG (anticodon of tRNA(Pro)) and investigated their mutual interaction. Circular dichroism spectroscopy revealed that guanosine nucleotides (GG, GGG) formed G-quartet structures. The structures were destroyed by adding high concentrations of proline. We propose that the possibility of the reversible proline/G-quartet interaction could have contributed to the specific assignment of proline on GGG and that this coding could have been the first in the genetic code.
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