The Isolation of Identical Hydroxylysyl Glycosides from Hydrolysates of Soluble Collagen and from Human Urine

Abstract After alkaline hydrolysis, the carbohydrate from soluble collagen of guinea pig skin may be largely accounted for as glycosides in which carbon 1 of the disaccharide, glucosyl-galactose, or of galactose, is attached to the δ-hydroxyl group of hydroxylysine. Identical compounds have also been isolated directly from normal human urine. These findings confirm the presence of disaccharide side chains in collagen.