Abstract
IT has recently proved possible to isolate from cell extracts, for example, from extracts of yeast and red blood corpuscles, a tripeptid containing glycine, glutamic acid, and cysteine, which readily crystallises. The separation is based upon the insolubility of the cuprous salt of the substance in normal sulphuric acid. This property of the salt makes cuprous copper an exceptionally selective precipitant.
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HOPKINS, F. A Crystalline Tripeptid from Living Cells. Nature 124, 445 (1929). https://doi.org/10.1038/124445b0
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DOI: https://doi.org/10.1038/124445b0
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