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Role of Ferrocyanides in the Prebiotic Synthesis of α-Amino Acids
Departamento de Evolución Molecular, Centro de Astrobiología (CSIC-INTA), Ctra, Torrejón-Ajalvir.
Departamento de Evolución Molecular, Centro de Astrobiología (CSIC-INTA), Ctra, Torrejón-Ajalvir.
Departamento de Instrumentación Avanzada, Cent. de Astro. Inst. Nac. de Tec. Aeroespacial-Consejo Superior de Invest. Cientificas (INTA-CSIC), Carretera Torrejón-Ajalvir.ORCID iD: 0000-0002-4492-9650
2013 (English)In: Origins of life and evolution of the biosphere, ISSN 0169-6149, E-ISSN 1573-0875, Vol. 43, no 3, 191-206 p.Article in journal (Refereed) Published
Abstract [en]

We investigated the synthesis of α-amino acids under possible prebiotic terrestrial conditions in the presence of dissolved iron (II) in a simulated prebiotic ocean. An aerosol-liquid cycle with a prebiotic atmosphere is shown to produce amino acids via Strecker synthesis with relatively high yields. However, in the presence of iron, the HCN was captured in the form of a ferrocyanide, partially inhibiting the formation of amino acids. We showed how HCN captured as Prussian Blue (or another complex compound) may, in turn, have served as the HCN source when exposed to UV radiation, allowing for the sustained production of amino acids in conjunction with the production of oxyhydroxides that precipitate as by-products. We conclude that ferrocyanides and related compounds may have played a significant role as intermediate products in the prebiotic formation of amino acids and oxyhydroxides, such as those that are found in iron-containing soils and that the aerosol cycle of the primitive ocean may have enhanced the yield of the amino acid production

Place, publisher, year, edition, pages
2013. Vol. 43, no 3, 191-206 p.
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-63566ScopusID: 2-s2.0-84880831802OAI: oai:DiVA.org:ltu-63566DiVA: diva2:1099015
Available from: 2017-05-29 Created: 2017-05-29 Last updated: 2017-05-29Bibliographically approved

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