Volume 4, Issue 4 pp. 694-720
Review

Formamide Chemistry and the Origin of Informational Polymers

Raffaele Saladino

Raffaele Saladino

Dipartimento A. B. A. C., Università della Tuscia, Via San Camillo De Lellis, I-01100 Viterbo

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Claudia Crestini

Claudia Crestini

Dipartimento di Scienze e Tecnologie Chimiche, Università ‘Tor Vergata', I-00133 Rome

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Fabiana Ciciriello

Fabiana Ciciriello

Dipartimento di Genetica e Biologia Molecolare, University ‘La Sapienza', P.le Aldo Moro, 5, I-00185 Rome

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Giovanna Costanzo

Giovanna Costanzo

Istituto di Biologia e Patologia Molecolari, CNR, P.le Aldo Moro, 5, I-00185 Rome

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Ernesto Di Mauro

Ernesto Di Mauro

Fondazione ‘Istituto Pasteur-Fondazione Cenci-Bolognetti', c/o Dipartimento di Genetica e Biologia Molecolare, Università ‘La Sapienza', P.le Aldo Moro, 5, I-00185 Rome, (phone: +39 06 49912880; fax: +39 06 49912500)

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First published: 19 April 2007
Citations: 111

Abstract

Formamide (HCONH2) provides a chemical frame potentially affording all the monomeric components necessary for the formation of nucleic polymers. In the presence of the appropriate catalysts, and by moderate heating, formamide yields a complete set of nucleic bases, acyclonucleosides, and favors both phosphorylations and transphosphorylations. Physico-chemical conditions exist in which formamide favors the stability of the phosphoester bonds in nucleic polymers more than that of the same bonds in monomers. This property establishes ‘thermodynamic niches’ in which the polymeric forms are favored. The hypothesis that these specific attributes of formamide allowed the onset of prebiotic chemical equilibria capable of Darwinian evolution is discussed.

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