1. Mouse mast-cell tumours P815 Y and HC were shown to contain glycoprotein material composed of glucosamine, galactosamine, sialic acid, galactose and mannose. 2. The major amino acids released after acid hydrolysis of Pronase-treated digests of the glycoprotein are aspartic acid, glutamic acid, serine, threonine, proline, glycine and alanine. The Pronase-digested material is not degraded in a...

chromogen of which exhibited 26 per cent of t... absorption at 590 rnp of an equal weight, of N.scetyl. ~_____ J reptinne\ value as the +anhydrc sugar has been rla+.an+=r L% the pyrolysis mixture, which is not ~l*evl pyrclyais is used in the preparation of the w&j sugar from ivory nut menncn~~. It is notewcrg that B heated mixture (1 : 1) of this anhydro 8,,&? and n-glucosamine hydrochloride ga...

From the effects of N-acetyl-d-glucosamine and d-glucose on the elution of the A protein of human lactose synthetase from a column of Sepharose-alpha-lactalbumin, values of 200m(-1) and 0.57m(-1) are deduced for the association constants describing the interaction between the enzyme and the respective monosaccharides.

1. The teichoic acid from walls of Staphylococcus lactis I3 was isolated by extraction with trichloroacetic acid and shown to contain glycerol, N-acetylglucosamine, phosphate and d-alanine in the molecular proportions 1:1:2:1. The alanine is attached to the polymer through ester linkages. 2. Hydrolysis with acid gave alanine, glucosamine and glycerol diphosphates. Under mild acid conditions a r...