globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1422225112
论文题名:
Meteorite-catalyzed syntheses of nucleosides and of other prebiotic compounds from formamide under proton irradiation
作者: Saladino R.; Carota E.; Botta G.; Kapralov M.; Timoshenko G.N.; Rozanov A.Y.; Krasavin E.; Di Mauro E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2015
卷: 112, 期:21
起始页码: E2746
结束页码: E2755
语种: 英语
英文关键词: Formamide ; Meteorites ; Nucleosides ; Origin of life ; Prebiotic syntheses
Scopus关键词: acid ; adenosine ; amino acid ; carbohydrate ; carboxylic acid ; cyanide ; cytidine ; formamide ; iron ; nucleic acid base ; nucleoside ; oligomer ; prebiotic agent ; thymidine ; uridine ; formamide ; formamide derivative ; nucleoside ; proton ; Article ; astronomy ; catalysis ; extant species ; priority journal ; proton radiation ; theoretical study ; biogenesis ; chemical model ; chemical structure ; chemistry ; radiation response ; synthesis ; Amino Acids ; Carboxylic Acids ; Catalysis ; Evolution, Chemical ; Formamides ; Meteoroids ; Models, Chemical ; Molecular Structure ; Nucleosides ; Origin of Life ; Protons
英文摘要: Liquid formamide has been irradiated by high-energy proton beams in the presence of powdered meteorites, and the products of the catalyzed resulting syntheses were analyzed by mass spectrometry. Relative to the controls (no radiation, or no formamide, or no catalyst), an extremely rich, variegate, and prebiotically relevant panel of compounds was observed. The meteorites tested were representative of the four major classes: iron, stony iron, chondrites, and achondrites. The products obtained were amino acids, carboxylic acids, nucleobases, sugars, and, most notably, four nucleosides: cytidine, uridine, adenosine, and thymidine. In accordance with theoretical studies, the detection of HCN oligomers suggests the occurrence of mechanisms based on the generation of radical cyanide species (CN·) for the synthesis of nucleobases. Given that many of the compounds obtained are key components of extant organisms, these observations contribute to outline plausible exogenous high-energy-based prebiotic scenarios and their. © 2015, National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162207
Appears in Collections:气候变化与战略

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作者单位: Saladino, R., Dipartimento di Scienze Ecologiche E Biologiche, Università Della Tuscia, Viterbo, 01100, Italy; Carota, E., Dipartimento di Scienze Ecologiche E Biologiche, Università Della Tuscia, Viterbo, 01100, Italy; Botta, G., Dipartimento di Scienze Ecologiche E Biologiche, Università Della Tuscia, Viterbo, 01100, Italy; Kapralov, M., Laboratory of Radiation Biology, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation; Timoshenko, G.N., Laboratory of Radiation Biology, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation; Rozanov, A.Y., Laboratory of Radiation Biology, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation; Krasavin, E., Laboratory of Radiation Biology, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation; Di Mauro, E., Istituto Pasteur-Fondazione Cenci Bolognetti, Dipartimento di Biologia E Biotecnologie Charles Darwin, Sapienza-Università di Roma, Rome, 00185, Italy

Recommended Citation:
Saladino R.,Carota E.,Botta G.,et al. Meteorite-catalyzed syntheses of nucleosides and of other prebiotic compounds from formamide under proton irradiation[J]. Proceedings of the National Academy of Sciences of the United States of America,2015-01-01,112(21)
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