Document Detail


Catalytic effects of glycine on prebiotic divaline and diproline formation.
MedLine Citation:
PMID:  15949627     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The catalytic effects of the simple amino acid glycine on the formation of diproline and divaline in the prebiotically relevant salt-induced peptide formation (SIPF) reaction was investigated in systems of different amino acid starting concentrations and using the two enantiomeric forms of the respective amino acid. Results show an improved applicability of the SIPF reaction to prebiotic conditions, especially at low amino acid concentrations, as presumably present in a primordial scenario, and indicate excellent conditions and resources for chemical evolution of peptides and proteins on the early earth. For valine, furthermore differences in catalytic yield increase are found indicating a chiral selectivity of the active copper complex of the reaction and showing a connection to previously found enantiomeric differences in complex formation constants with amino acids.
Authors:
Kristof Plankensteiner; Hannes Reiner; Bernd M Rode
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-02-16
Journal Detail:
Title:  Peptides     Volume:  26     ISSN:  0196-9781     ISO Abbreviation:  Peptides     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-06-13     Completed Date:  2005-10-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8008690     Medline TA:  Peptides     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1109-12     Citation Subset:  IM    
Affiliation:
Division of Theoretical Chemistry, Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria.
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MeSH Terms
Descriptor/Qualifier:
Catalysis
Dipeptides / chemical synthesis*
Glycine / chemistry*
Chemical
Reg. No./Substance:
0/Dipeptides; 0/prolyl-proline; 3918-94-3/valylvaline; 56-40-6/Glycine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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