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    Science. 1990 May 4;248(4955):605-7.

    Identity of inositol 1,2-cyclic phosphate 2-phosphohydrolase with lipocortin III.

    Source

    Department of Internal Medicine, Washington University School of Medicine, St Louis, MO 63110.

    Abstract

    The amino acid sequences of three fragments of cyanogen bromide-digested human placental inositol 1,2-cyclic phosphate 2-phosphohydrolase, an enzyme of the phosphatidylinositol signaling pathway, are identical to sequences within lipocortin III, a member of a family of homologous calcium- and phospholipid-binding proteins that do not have defined physiological functions. Lipocortin III has also been previously identified as placental anticoagulant protein III (PAP III) and calcimedin 35 alpha. Antibodies to PAP III detected PAP III and inositol 1,2-cyclic phosphate 2-phosphohydrolase with identical reactivity on immunoblotting. In addition, inositol 1,2-cyclic phosphate 2-phosphohydrolase was stimulated by the same acidic phospholipids that bind lipocortins.

    PMID:
    2159184
    [PubMed - indexed for MEDLINE]

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