Abstract
Evidence is presented for the homogeneity of a preparation of hypothalamic TRF of ovine origin and its molecular structure has been established as 2-pyrrolidone-5-carboxylyl-histidyl-proline amide. Synthetic L-2-pyrrolidone-5-carboxylyl-L-histidyl-L-proline amide has physicochemical and biological characteristics which are quantitatively and qualitatively indistinguishable from those of the natural substance isolated in this laboratory.
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BURGUS, R., DUNN, T., DESIDERIO, D. et al. Characterization of Ovine Hypothalamic Hypophysiotropic TSH-releasing Factor. Nature 226, 321–325 (1970). https://doi.org/10.1038/226321a0
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DOI: https://doi.org/10.1038/226321a0
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