title: Fractionation and amino acid composition of an aspartic acid-containing thermal proteinoid population.
abstract: The heterogeneity of an aspartic acid-containing thermal polymer population has been studied by anion exchange chromatography, amino acid analysis of the resulting fractions and data processing by the principal components method. By using stepwise or continuous gradients of ionic strength both saw-toothed or bell-shaped elution profiles were obtained. This behaviour and the amino acid composition of analyzed fractions suggest a relatively high degree of heterogeneity in the polymer population although less than theoretically expected. This conclusion is compared with the findings reported in proteinoids made by similar procedures.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D001224:Aspartic Acid / Q000032:analysis*; D002852:Chromatography, Ion Exchange; D006358:Hot Temperature; D011108:Polymers; D011506:Proteins / Q000032:analysis*
chemical_list: D000596:Amino Acids; D011108:Polymers; D011506:Proteins; D001224:Aspartic Acid