1,771 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Molecular mechanism to target the endosomal Mon1-Ccz1 GEF complex to the pre-autophagosomal structure

    Jieqiong Gao et al.
    The endosomal GEF Mon1-Ccz1 binds to Atg8 on autophagosomes, and recruits its substrate, the Rab7-like Ypt7, which then mediates fusion of the autophagosomes with the lysosome.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Daple is a novel non-receptor GEF required for trimeric G protein activation in Wnt signaling

    Nicolas Aznar et al.
    Daple is a guanine nucleotide-exchange factor (GEF) for trimeric G proteins that enables Wnt/Frizzled receptors to transactivate G proteins during non-canonical Wnt signaling.
    1. Cell Biology

    EGF receptor signaling, phosphorylation, ubiquitylation and endocytosis in tumors in vivo

    Itziar Pinilla-Macua et al.
    A small pool of active epidermal growth factor (EGF) receptors, which are capable of ubiquitylation and efficient endocytosis in vivo, is sufficient to support EGF-receptor-dependent tumor growth by signaling primarily through the Ras-MAPK pathway.
    1. Human Biology and Medicine

    Inhibition of mutant EGFR in lung cancer cells triggers SOX2-FOXO6-dependent survival pathways

    S Michael Rothenberg et al.
    SOX2 causes resistance to anti-EGFR therapies in EGFR-mutant lung cancer.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular mechanism for Rabex-5 GEF activation by Rabaptin-5

    Zhe Zhang et al.
    The GEF activity of Rabex-5 is weakly autoinhibited by its CC domain and activated by Rabaptin-5 and the two proteins work concertedly to activate Rab5.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology and Stem Cells

    Crk proteins transduce FGF signaling to promote lens fiber cell elongation

    Tamica N Collins et al.
    Crk proteins are critical mediators of FGF signaling to control cell shape changes.
    1. Cell Biology
    2. Computational and Systems Biology

    EGF-dependent re-routing of vesicular recycling switches spontaneous phosphorylation suppression to EGFR signaling

    Martin Baumdick et al.
    Plasticity arising from autocatalytic receptor activation coexists with robustness in ligand responsiveness only by differential endosomal sorting of spontaneous and ligand-activated EGFR as distinct molecular states.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    TGF-β uses a novel mode of receptor activation to phosphorylate SMAD1/5 and induce epithelial-to-mesenchymal transition

    Anassuya Ramachandran et al.
    SMAD1/5 signaling is essential for the full transforming growth factor β (TGF-β)-induced transcriptional program and physiological responses and is induced via a novel receptor activation mechanism, involving two distinct type I receptors.
    1. Developmental Biology and Stem Cells

    FGF mediated MAPK and PI3K/Akt Signals make distinct contributions to pluripotency and the establishment of Neural Crest

    Lauren Geary, Carole LaBonne
    A role for FGF-mediated Map Kinase signaling in the retention of pluripotency underlying genesis of Neural Crest is revealed, along with a striking switch in the signaling cascades activated by FGF signaling as cells commence lineage restriction.
    1. Cell Biology
    2. Computational and Systems Biology

    Dynamic NF-κB and E2F interactions control the priority and timing of inflammatory signalling and cell proliferation

    John M Ankers et al.
    Cell imaging and mathematical modelling show reciprocal cross-regulation between inflammatory signalling and cell cycle timing, which is mediated through functional interactions between NF-B and E2F proteins.

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