Influence of aluminum oxide on the prebiotic thermal synthesis of Gly-Glu-(Gly-Glu)n polymer

PATRICIO ALEJANDRO LEYTON BONGIORNO, R. Antonio Zárate, Sandra Fuentes, Carolina Paipa, Juan S. Gómez-Jeria, Yessica Leyton

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11 Scopus citations

Abstract

The effect of the aluminum oxide on the thermal synthesis of the glycine-glutamic acid (Gly-Glu-(Gly-Glu)n polymer is described. The thermal synthesis in the molten state was carried out in the absence and presence of the oxide. In both cases, the vibrational spectra showed characteristic group frequencies corresponding predominantly to a Gly-Glu-(Gly-Glu)n sequence in the polymeric structure. The theoretical spectral data support the experimental proposed Gly-Glu-(Gly-Glu)n sequence for the polymer. The SEM-EDX characterization of the solid phase involved in the thermal synthesis showed that the aluminum oxide participates as a site for nucleation and growth of the polymer, explaining the increase of 25% efficiency in the presence of aluminum oxide. Electrophoresis data show shorter polypeptide chains in the presence of aluminum oxide.

Original languageEnglish
Pages (from-to)118-126
Number of pages9
JournalBioSystems
Volume104
Issue number2-3
DOIs
StatePublished - 1 May 2011

Keywords

  • Prebiotic chemistry
  • Thermal synthesis
  • Vibrational spectroscopy

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