[Characteristics of the carbohydrate component of trophoblastic beta1-glycoprotein]

By use of the methylation method, trophoblast-specific beta 1-glycoprotein (TSG, SP-1) has been shown to contain N-glycosidically linked oligosaccharide chains of the N-acetyl lactosamine type. Methylation analysis of TSG fractions which have various affinity to concanavalin A indicates that the diantennary carbohydrate chains prevail in the glycoprotein molecule.