Abstract
A glycoprotein with blood group P1 specificity isolated from sheep hydatid cyst fluid was subjected to partial acid hydrolysis. The hydrolysis products were separated by preparative paper chromatography. One oligosaccharide with strong P1 serological activity was characterised as a trisaccharide composed of galactose and glucosamine in the molar ratio of 2:1. Reduction with sodium borohydride gave galactose and glucosaminitol. Methylation analysis and degradation with specific α- and β- galactosidases showed the structure of the P1 determinant to be D-galactosyl-α(l→4)-D-galactosyl-β(l→4)-N-acetyl-D-glucosamine.
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