Zur Ausscheidung von Peptiden im menschlichen Harn. Mikropräparative Isolierung und nähere Charakterisierung

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Abstract
By combining different separatory methods (continuous paper electrophoresis, ion exchange chromatography, gel filtration and paper chromatography), many long chain peptides were isolated, largely pure and in milligram quantities from the pooled urines of normal persons, The amino acid composition, and the content of carbohydrate and P were determined, and a qualitative test for hexosamine was carried out on most of the 36 fractions that were studied. On the basis of the amino acid composition and especially the content of hydroxyproline, 18 peptides, mostly with comparatively long chains, were related to the fibrous protein, collagen.