Abstract Several polypeptides prepared by means of pyrocondensation have been the subject of structural investigations. Attention has been focused on the constitutional characterization of homo-and co-polymers containing Asp and Glu residues, whose role is essential for the formation of the so-called proteinoids. Contrary to the literature data based on chemical degradation, nmr studies show conclusively that in thermal poly-aspartic acid only β-peptide linkages are present. This result casts serious doubt on the role thermal condensation might have played in prebiotic polypeptide syntheses.
NMR studies of prebiotic polypeptides
Origins of life ; 6 , 1-2
1975
Article (Journal)
English
BKL: | 44.71 Verkehrsmedizin | |
Local classification TIB: | 535/3908/4290 |
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