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From our earlier investigations, it comes out that proteinogenic amino acids can undergo spontaneous oscillatory reactions of chiral inversion and peptidization.  l -Serine ( l -Ser) is an important proteinogenic amino acid with many vital functions in human and mammalian organisms, e.g., it is responsible for good condition of the nervous cell membranes. It undergoes spontaneous oscillatory processes of chiral inversion and peptidization, and the goal of this study was to compare the dynamics of its peptidization with that of  d -Ser and  dl -Ser (racemate). The main analytical technique used in our experiment was TLC-densitometry, and the auxiliary chromatographic techniques were HPLC–evaporative light scattering detector and LC–MS. The results obtained witness to the differences in peptidization dynamics of the two Ser enantiomers ( l  and  d ) and of the racemic mixture thereof ( dl ). It was shown that  dl -Ser characterizes with the higher, and  l - and  d -Ser with the lower peptidization yields.

journal of chromatographic science

Dynamics of Spontaneous Peptidization of  l -,  d - and  dl -Serine in an Abiotic Solution as Investigated with Use of TLC-Densitometry and the Auxiliary Chromatographic Techniques