Document Detail

Detection of Peptidic Sequences in the Ancient Acidic Sediments of Río Tinto, Spain.
MedLine Citation:
PMID:  22139519     Owner:  NLM     Status:  Publisher    
Biomarkers are molecules that are produced by or can be associated with biological activities. They can be used as tracers that give us an idea of the ancient biological communities that produced them, the paleoenvironmental conditions where they lived, or the mechanism involved in their transformation and preservation. As a consequence, the preservation potential of molecules over time depends largely on their nature, but also on the conditions of the environment, which controls the decomposition kinetics. In this context, proteins and nucleic acids, which are biomolecules bearing biological information, are among the most labile molecules. In this research, we report the presence of short-chained peptides obtained from extracts of ferruginous sedimentary deposits that have been produced under the acidic and oxidizing solutions of Río Tinto, Spain. These preliminary results go against the paradigmatic idea that considers the acidic and oxidizing environments inappropriate for the preservation of molecular information.
María Colín-García; Basem Kanawati; Mourad Harir; Phillippe Schmitt-Kopplin; Ricardo Amils; Victor Parro; Miriam García; David Fernández-Remolar
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-3
Journal Detail:
Title:  Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life     Volume:  -     ISSN:  1573-0875     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610391     Medline TA:  Orig Life Evol Biosph     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Centro de Astrobiología, (CSIC/INTA), Instituto Nacional de Técnica Aeroespacial. Ctra. de Torrejón a Ajalvir, km 4, 28850. Torrejón de Ardoz, Madrid, Spain.
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