View at Publisher|Order document(opens in a new window)| Export | Download | Add to List | More... Origins of Life and Evolution of Biospheres Volume 46, Issue 4, 1 November 2016, Pages 515-521 First Evidence on the Role of Heavy Ion Irradiation of Meteorites and Formamide in the Origin of Biomolecules (Article) Saladino, R.a , Carota, E.a, Botta, G.a, Kapralov, M.b, Timoshenko, G.N.b, Rozanov, A.b, Krasavin, E.b, Di Mauro, E.c a Dipartimento di Scienze Ecologiche e Biologiche, Università della Tuscia Via San Camillo De Lellis, Viterbo, Italy b Joint Institute for Nuclear Research, JINR’s Laboratory of Radiation Biology, Dubna, Russian Federation c Dipartimento di Biologia e Biotecnologie “Charles Darwin”, University Sapienza, Piazzale Aldo Moro 5, Rome, Italy View additional affiliations View references (30) Abstract Formamide (NH2CHO) has been irradiated in condensed phase at 273 K by 11B-boron beams in the presence of powdered meteorites of the chondrite and stony-iron types. Relative to the controls (no radiation or no catalysis), a variegate panel of compounds was observed, including purine and pyrimidine nucleobases (uracil, cytosine, adenine, and guanine), nucleobase analogues, heterocycles, and carboxylic acids involved in metabolic pathways. The presence of amino imidazole carbonitrile (AICN), 4,6-diamino purine (4,6-DAP) and 2,4-diamino pyrimidine (2,4-DAPy) among the observed products suggests the occurrence of an unified mechanism based on the generation of radical cyanide species (•CN). These observations contribute to outline plausible prebiotic scenarios involving 11B-boron as energy source
First Evidence on the Role of Heavy Ion Irradiation of Meteorites and Formamide in the Origin of Biomolecules / Saladino, R., Carota, ., Botta, ., Kapralov, ., Timoshenko, ., G., N., Rozanov, ., Krasavin, ., Di, M.. - In: ORIGINS OF LIFE AND EVOLUTION OF THE BIOSPHERE. - ISSN 0169-6149. - Volume 46:Issue 4(2016), pp. 515-521. [10.1007/s11084-016-9495-0]
First Evidence on the Role of Heavy Ion Irradiation of Meteorites and Formamide in the Origin of Biomolecules
Saladino R;
2016
Abstract
View at Publisher|Order document(opens in a new window)| Export | Download | Add to List | More... Origins of Life and Evolution of Biospheres Volume 46, Issue 4, 1 November 2016, Pages 515-521 First Evidence on the Role of Heavy Ion Irradiation of Meteorites and Formamide in the Origin of Biomolecules (Article) Saladino, R.a , Carota, E.a, Botta, G.a, Kapralov, M.b, Timoshenko, G.N.b, Rozanov, A.b, Krasavin, E.b, Di Mauro, E.c a Dipartimento di Scienze Ecologiche e Biologiche, Università della Tuscia Via San Camillo De Lellis, Viterbo, Italy b Joint Institute for Nuclear Research, JINR’s Laboratory of Radiation Biology, Dubna, Russian Federation c Dipartimento di Biologia e Biotecnologie “Charles Darwin”, University Sapienza, Piazzale Aldo Moro 5, Rome, Italy View additional affiliations View references (30) Abstract Formamide (NH2CHO) has been irradiated in condensed phase at 273 K by 11B-boron beams in the presence of powdered meteorites of the chondrite and stony-iron types. Relative to the controls (no radiation or no catalysis), a variegate panel of compounds was observed, including purine and pyrimidine nucleobases (uracil, cytosine, adenine, and guanine), nucleobase analogues, heterocycles, and carboxylic acids involved in metabolic pathways. The presence of amino imidazole carbonitrile (AICN), 4,6-diamino purine (4,6-DAP) and 2,4-diamino pyrimidine (2,4-DAPy) among the observed products suggests the occurrence of an unified mechanism based on the generation of radical cyanide species (•CN). These observations contribute to outline plausible prebiotic scenarios involving 11B-boron as energy sourceI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
