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    Science. 2001 Jun 1;292(5522):1716-8.

    Binding of GGA2 to the lysosomal enzyme sorting motif of the mannose 6-phosphate receptor.

    Source

    Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.

    Abstract

    The GGAs are a multidomain protein family implicated in protein trafficking between the Golgi and endosomes. Here, the VHS domain of GGA2 was shown to bind to the acidic cluster-dileucine motif in the cytoplasmic tail of the cation-independent mannose 6-phosphate receptor (CI-MPR). Receptors with mutations in this motif were defective in lysosomal enzyme sorting. The hinge domain of GGA2 bound clathrin, suggesting that GGA2 could be a link between cargo molecules and clathrin-coated vesicle assembly. Thus, GGA2 binding to the CI-MPR is important for lysosomal enzyme targeting.

    Comment in

    PMID:
    11387476
    [PubMed - indexed for MEDLINE]
    Free full text

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