Abstract
The identification of γ hydroxyproline 1 among the products of hydrolysis of an acid active in pernicious anemia indicated the possibility of using Reinecke's 2 salt as a precipitant for this material from liver. Experiments have shown that Reinecke's salt does precipitate this acid and also precipitates active material from liver extract and promises to be useful as a preparative method. This observation is in harmony with the view that the γ hydroxyproline nucleus is an integral part of the active material in liver. The composition of the precipitate derived from the acid closely approximates that required for one molecule of organic acid and 2 molecules of Reinecke's acid.
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