Ovalbumin was hydrolysed with Pronase-P, and the carbohydrate-containing fragments were isolated as two glycopeptides. From partial hydrolysate of glycopeptides in 2N hydrochloric acid, N-acetylglucosamine-asparagine compound was isolated in pure, crystalline state, and its structure was established for N-(L-β-aspartyl)-2-acetamido-2-deoxy-β-D-glucosylamine.
