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  • Wiley-Blackwell  (1)
  • 1970-1974  (1)
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    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 1263-1268 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Peptide Synthesis in the Aqueous Phase, I.  -  Polyethyleneimine as a Water Soluble Support for the N-Carboxyanhydride MethodThe model peptide Ala-Trp-Ile (9) attached through an arginine bridge to a water soluble polyethyleneimine (1) is prepared via the N-carboxyanhydride method. The amount of arginine bound to 1 has been found to be 18 mol %. The polymer linked to the model peptide 9 can be specifically and quantitatively cleaved by trypsin into Ala-Trp-Ile-Arg (8) and 1. Further treatment of 8 with carboxypeptidase B quantitatively affords the model peptide 9 and the carboxy terminal bridging arginine (10).
    Notes: Das Modellpeptid Ala-Trp-Ile (9) wird nach der N-Carboxyanhydrid-Methode an wasserlöslichem, polymerem Äthylenimin (1), das zu 18 Mol-% mit Arginin-Brücken besetzt ist (3), synthetisiert. Mit Trypsin erfolgt spezifisch und quantitativ die Abspaltung des Ala-Trp-Ile-Arg (8) vom polymeren Träger. Durch Carboxypeptidase B wird 8 spezifisch und quantitativ zu 9 und dem ursprünglich carboxylendständigen Brücken-Arginin (10) gespalten.
    Type of Medium: Electronic Resource
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