Abstract Cross-polarization magic-angle $ spinning^{15} $NMR spectra have been used to determine the composition of hydrogen cyanide polymers both before and after treatment with water. The unambiguous presence of secondary amide groups (as in peptide links) has been established by double-cross-polarization studies on the polymers synthesized from equimolar amounts of $ H^{13} $CN and $ HC^{15} $N. The NMR results are consistent with the hypothesis that the original heteropolypeptides on Earth were synthesized directly from hydrogen cyanide and water without the intervening formation of α-amino acids.


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    Titel :

    Heteropolypeptides from hydrogen cyanide and water? Solid $ state^{15} $N NMR investigations


    Beteiligte:
    Matthews, C. N. (Autor:in) / Ludicky, R. (Autor:in) / Schaefer, Jacob (Autor:in) / Stejskal, E. O. (Autor:in) / McKay, R. A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1984




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch



    Klassifikation :

    Lokalklassifikation TIB:    535/3908/4290
    BKL:    44.71 Verkehrsmedizin




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