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  • Title: Effect of adenosine 3',5'-monophosphate on serine metabolism in chick tissues.
    Author: Coon CN, Luther LW, Cough JR.
    Journal: Proc Soc Exp Biol Med; 1976 Jun; 152(2):175-7. PubMed ID: 180542.
    Abstract:
    The effect of cyclic 3',5'-AMP and supplemental dietary glycine upon de novo synthesis of serine metabolic enzymes in chick livers were examined. Chicks fed crystalline amino acid diets containing 2% glycine had approximately twofold the activity in liver for 3-phosphoglycerate dehydrogenase and phosphoserine phosphatase compared to liver tissue from chicks fed diets lacking in dietary glycine. Chicks subjected to daily intraperitoneal injections of cyclic 3',5'-AMP and fed diets containing no dietary glycine contained biosynthetic enzyme activity similar to glycine-fed chicks suggesting a correlation between glycine and cyclic AMP for serine enzyme induction. The elevated enzyme activity in liver of chicks fed dietary glycine or injected with cyclic AMP was inhibited when chicks were also injected with actinomycin D indicating de novo synthesis of 3-phosphoglycerate dehydrogenase and phosphoserine phosphatase. Dietary glycine or cyclic AMP, however, did not change serine dehydratase and glycerate dehydrogenase activities in chick liver.
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