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    5T4 interacts with TIP-2/GIPC, a PDZ protein, with implications for metastasis.

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    Authors
    Awan, Abida
    Lucic, Melinda R
    Shaw, David M
    Sheppard, Freda C
    Westwater, Caroline
    Lyons, Steve
    Stern, Peter L
    Affiliation
    CRC Immunology Group, CRC Molecular Biology Group, The Paterson Institute for Cancer Research, Christie Hospital NHS Trust, Wilmslow Road, Manchester, M20 4BX, United Kingdom.
    Issue Date
    2002-01-25
    
    Metadata
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    Abstract
    Overexpression of the 5T4 transmembrane glycoprotein can have marked effects on both the actin cytoskeleton and cell migration. Using a yeast two-hybrid approach, we describe a novel interaction between 5T4 and TIP-2/GIPC, a cytoplasmic interacting protein containing a PDZ domain. The cytoplasmic tail of 5T4 contains a class I PDZ-binding motif (Ser-Asp-Val) and we demonstrate that this region, in particular the terminal valine, is required for 5T4 interaction with TIP-2/GIPC. HeLa cells expressing hemagglutinin-tagged TIP-2/GIPC (HA-TIP-2/GIPC) have an altered distribution of endogenous 5T4, which colocalizes with HA-TIP-2/GIPC, thus supporting an interaction. Furthermore, TIP-2/GIPC can be coimmunoprecipitated with 5T4 from HeLa cell lysates. Identification of the 5T4 and TIP-2/GIPC interaction provides the first link between 5T4 and the actin cytoskeleton. Since other proteins, like 5T4, associate with TIP-2/GIPC and are linked with cancer, we explore the possibility that TIP-2/GIPC may be a common factor involved in the cancer process.
    Citation
    5T4 interacts with TIP-2/GIPC, a PDZ protein, with implications for metastasis. 2002, 290 (3):1030-6 Biochem. Biophys. Res. Commun.
    Journal
    Biochemical and Biophysical Research Communications
    URI
    http://hdl.handle.net/10541/82436
    DOI
    10.1006/bbrc.2001.6288
    PubMed ID
    11798178
    Type
    Article
    Language
    en
    ISSN
    0006-291X
    ae974a485f413a2113503eed53cd6c53
    10.1006/bbrc.2001.6288
    Scopus Count
    Collections
    All Paterson Institute for Cancer Research

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