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    FEBS Lett. 2002 Sep 11;527(1-3):51-7.

    The cytoplasmic tail peptide sequence of membrane type-1 matrix metalloproteinase (MT1-MMP) directly binds to gC1qR, a compartment-specific chaperone-like regulatory protein.

    Source

    The Burnham Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.

    Abstract

    Membrane type-1 matrix metalloproteinase (MT1-MMP), a key enzyme in cell locomotion, is known to be primarily recruited to the leading edge of migrating cells. This raises a possibility that the C-terminal cytoplasmic tail of MT1-MMP interacts with intracellular regulatory proteins, which modulate translocations of the protease across the cell. Here, we demonstrated that MT1-MMP via its cytoplasmic tail directly associates with a chaperone-like compartment-specific regulator gC1qR. Although a direct functional link between these two proteins remains uncertain, our observations suggest that the transient associations of gC1qR with the cytoplasmic tail of MT1-MMP are likely to be involved in the mechanisms regulating presentation of the protease at the tumor cell surface.

    PMID:
    12220632
    [PubMed - indexed for MEDLINE]

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