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    Biochem Biophys Res Commun. 1988 May 16;152(3):1289-97.

    Cloning, characterization, and expression of a human insulin-like growth factor binding protein.

    Source

    Synergen, Inc., Boulder, CO 80301.

    Erratum in

    • Biochem Biophys Res Commun 1988 Sep 30;155(3):1485.

    Abstract

    Insulin-like growth factors (IGFs) bind to specific proteins present in extracellular fluids. One of these binding proteins (IGF-BP) was purified from human amniotic fluid and was shown to potentiate the effects of IGF-I in vitro (10). In these studies, a polyclonal antibody to this protein was used to isolate a cDNA clone from a human decidua library. This clone encodes a polypeptide of 25,832 daltons that includes the sequences of 9 tryptic peptides that had been prepared from the purified IGF-BP. The protein has 15 cysteines that are clustered at the amino and carboxy ends of the molecule. The protein has an RGD sequence near its C-terminus, which may account for its ability to attach to cells and to potentiate the biological actions of IGF-I.

    PMID:
    2454104
    [PubMed - indexed for MEDLINE]

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