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Publication Detail
The role of EGF receptor ubiquitination in regulating its intracellular traffic.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Eden ER, Huang F, Sorkin A, Futter CE
  • Publication date:
    02/2012
  • Pagination:
    329, 337
  • Journal:
    Traffic
  • Volume:
    13
  • Issue:
    2
  • Status:
    Published
  • Country:
    England
  • Language:
    eng
  • Keywords:
    Animals, Aorta, Cell Membrane, Cells, Cultured, Clathrin, Endosomal Sorting Complexes Required for Transport, Endosomes, Endothelial Cells, Epidermal Growth Factor, ErbB Receptors, Humans, Mitogen-Activated Protein Kinase 1, Mitogen-Activated Protein Kinase 3, Multivesicular Bodies, Mutation, Phosphorylation, Protein Binding, Protein Subunits, Protein Transport, Sus scrofa, Transfection, Transferrin, Ubiquitination, Vesicular Transport Proteins
Abstract
Progression of activated EGF receptor (EGFR) through the endocytic pathway regulates EGFR signaling. Here we show that a non-ubiquitinated EGFR mutant, unable to bind the endosomal-sorting complex required for transport (ESCRT) component, Hrs, is not efficiently targeted onto intraluminal vesicles (ILVs) of multivesicular endosomes/bodies (MVBs). Moreover, ubiquitination and ESCRT engagement of activated EGFR are required for EGF-stimulated ILV formation. Non-ubiquitinated EGFRs enter clathrin-coated tubules emanating from MVBs and show enhanced recycling to the plasma membrane, compared to wild-type EGFR.
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