Periodate oxidation studies of human pituitary follicle-stimulating hormone

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Abstract
A preparation of human pituitary follicle-stimulating hormone was subjected to periodate oxidation, borohydride reduction and acid hydrolysis. Comparison of the analysis of the remaining intact carbohydrate and amino acid units with the analyses of the original material and identification of the carbohydrate fragments permit some structural assignments to the molecule of follicle-stimulating hormone. The results of radioimmunological assay of fragments of the molecule of follicle-stimulating hormone suggest that, although the carbohydrate component is essential for biological activity, it is not a requirement for immunological activity, which appears to be a function of the protein moiety.