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  • Title: The phosphatidylinositol kinase of rat brain.
    Author: Kai M, White GL, Hawthorne JN.
    Journal: Biochem J; 1966 Nov; 101(2):328-37. PubMed ID: 4290722.
    Abstract:
    1. The presence of a phosphatidylinositol kinase in homogenates of adult rat brain was shown by using labelled ATP or labelled phosphatidylinositol. 2. The kinase was activated by Mg(2+) or Mn(2+) and inhibited by Ca(2+), Cu(2+), K(+), Na(+) and F(-). 3. The detergents sodium deoxycholate, Cutscum and Triton X-100 markedly stimulated the reaction; sodium taurocholate, Tween-20 and cetyltrimethyl-ammonium bromide were less effective. 4. The activity of the enzyme was dependent on SH groups. 5. The subcellular distribution of the kinase in brain resembled that of Na(+)-plus-K(+)-stimulated adenosine triphosphatase and 5'-nucleotidase.
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