Laboratory photochemical formation of peptides in presence of meteorites as a model of chemical evolution process

Details Laboratory photochemical formation of peptides in presence of meteorites as a model of chemical evolution process Laboratory photochemical formation of peptides in presence of meteorites as a model of chemical evolution process

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.496..345g&link_type=abstract

In: Exo-/astro-biology. Proceedings of the First European Workshop, 21 - 23 May 2001, ESRIN, Frascati, Italy. Eds.: P. Ehrenfreu

Biology

Laboratory Simulations, Meteorites, Chemical Evolution

Scientific paper

To have a better understanding of the processes leading to the origin, evolution and distribution of life on Earth and elsewhere we have performed experiments on the prebiotic synthesis of peptides. In this paper we took glycine+phenylalanine dry films exposed to short ultraviolet irradiation because solar UV is known as a driving force of organic chemical evolution. It seems very important to evaluate the possible influence of meteorites on solid phase synthesis of peptides. Dipeptides and tripeptides were identified by means of HPLC technique. Total yield of peptides synthesized follows certain sequences: yield in presence of Murchison meteorite > yield in presence of Allende meteorite > yield in the absence of mineral beds. It has been stated that in average the presence of mineral dust at the exposure of dry films increased total product yield roughly by two times. Photolysis of initial aminoacids was also studied. Our results coincided with those obtained for peptide synthesis in presence of lunar soil.

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