| Adsorption and polymerization of amino acids on mineral surfaces: a review. | |
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MedLine Citation:
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PMID: 18344011 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present paper offers a review of recent (post-1980) work on amino acid adsorption and thermal reactivity on oxide and sulfide minerals. This review is performed in the general frame of evaluating Bernal's hypothesis of prebiotic polymerization in the adsorbed state, but written from a surface scientist's point of view. After a general discussion of the thermodynamics of the problem and exactly what effects surfaces should have to make adsorbed-state polymerization a viable scenario, we examine some practical difficulties in experimental design and their bearing on the conclusions that can be drawn from extant works, including the relevance of the various available characterization techniques. We then present the state of the art concerning the mechanisms of the interactions of amino acids with mineral surfaces, including results from prebiotic chemistry-oriented studies, but also from several different fields of application, and discuss the likely consequences for adsorption selectivities. Finally, we briefly summarize the data concerning thermally activated amide bond formation of adsorbed amino acids without activating agents. The reality of the phenomenon is established beyond any doubt, but our understanding of its mechanism and therefore of its prebiotic potential is very fragmentary. The review concludes with a discussion of future work needed to fill the most conspicuous gaps in our knowledge of amino acids/mineral surfaces systems and their reactivity. |
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Authors:
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Jean-François Lambert |
Publication Detail:
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Type: Journal Article; Review Date: 2008-03-15 |
Journal Detail:
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Title: Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life Volume: 38 ISSN: 0169-6149 ISO Abbreviation: Orig Life Evol Biosph Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-05-13 Completed Date: 2008-09-03 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8610391 Medline TA: Orig Life Evol Biosph Country: Netherlands |
Other Details:
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Languages: eng Pagination: 211-42 Citation Subset: IM; S |
Affiliation:
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Laboratoire de Réactivité de Surface, UMR CNRS 7609, UPMC Univ Paris 06 and CNRS, Paris, France. lambert@ccr.jussieu.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Amino Acids / chemistry* Biogenesis* Hot Temperature* Minerals / chemistry* Models, Chemical* Polymers / chemistry* Thermodynamics |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids; 0/Minerals; 0/Polymers |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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