Abstract
THE amino-acid composition of a human growth hormone preparation was given by Dixon and Li1 in 1962; and the same year Li, Liu and Dixon also reported2 that human growth hormone purified by a procedure involving chromatography on ‘Amberlite IRC-50’ and ‘Sephadex G-50’ showed the same amino-acid composition. This communication records our findings on the amino-acid analysis of human growth hormone samples prepared by purification on ‘Sephadex G-200’3, a procedure which yields a product with approximately twice the biological activity of the preparations studied by Li et al.
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References
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MEISINGER, M., CIRILLO, V., DAVIS, G. et al. Amino-acid Composition of Human Growth Hormone. Nature 201, 820–821 (1964). https://doi.org/10.1038/201820a0
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DOI: https://doi.org/10.1038/201820a0
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