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    Dev Cell. 2002 Aug;3(2):271-82.

    Escrt-III: an endosome-associated heterooligomeric protein complex required for mvb sorting.

    Babst M, Katzmann DJ, Estepa-Sabal EJ, Meerloo T, Emr SD.

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    Department of Cellular and Molecular Medicine and Howard Hughes Medical Institute, School of Medicine, University of California, San Diego, La Jolla 92093, USA.

    Abstract

    The sorting of transmembrane proteins (e.g., cell surface receptors) into the multivesicular body (MVB) pathway to the lysosomal/vacuolar lumen requires the function of the ESCRT protein complexes. The soluble coiled-coil-containing proteins Vps2, Vps20, Vps24, and Snf7 are recruited from the cytoplasm to endosomal membranes where they oligomerize into a protein complex, ESCRT-III. ESCRT-III contains two functionally distinct subcomplexes. The Vps20-Snf7 subcomplex binds to the endosomal membrane, in part via the myristoyl group of Vps20. The Vps2-Vps24 subcomplex binds to the Vps20-Snf7 complex and thereby serves to recruit additional cofactors to this site of protein sorting. We provide evidence for a role for ESCRT-III in sorting and/or concentration of MVB cargoes.

    PMID:
    12194857
    [PubMed - indexed for MEDLINE]

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