2,393 results found
    1. Cell Biology
    2. Immunology and Inflammation

    Arp2/3 complex-driven spatial patterning of the BCR enhances immune synapse formation, BCR signaling and B cell activation

    Madison Bolger-Munro et al.
    Arp2/3 complex-mediated actin polymerization shapes how B lymphocytes probe the surface of antigen-presenting cells, promotes coalescence of B cell receptor (BCR) microclusters, amplifies BCR signaling, and enhances B cell activation.
    1. Neuroscience

    APP modulates KCC2 expression and function in hippocampal GABAergic inhibition

    Ming Chen et al.
    APP interacts with KCC2 to limit the latter from tyrosine-phosphorylation and ubiquitination and thus subsequent degradation, revealing a novel molecular pathway in which APP regulates GABAergic signaling and thus inhibition in the hippocampus.
    1. Neuroscience

    Opposite changes in APP processing and human Aβ levels in rats carrying either a protective or a pathogenic APP mutation

    Marc D Tambini et al.
    APP mutations that either cause or prevent dementia alter APP metabolism in a complex and opposite fashion, suggesting a link between multiple APP processing events, dementia and ageing-dependent cognitive decline.
    1. Cell Biology

    NECAPs are negative regulators of the AP2 clathrin adaptor complex

    Gwendolyn M Beacham et al.
    Endocytosis is regulated by a protein family that recycles the AP2 clathrin adaptor by restoring the inactive form of complex.
    1. Cell Biology

    The membrane-associated proteins FCHo and SGIP are allosteric activators of the AP2 clathrin adaptor complex

    Gunther Hollopeter et al.
    Endocytosis is triggered by membrane-associated proteins that transform the clathrin adaptor into an active complex.
    1. Neuroscience

    Loss of presenilin function is associated with a selective gain of APP function

    Carole Deyts et al.
    Amyloid precursor protein expression and accumulation of its intracellular fragment are required for exuberant neurite outgrowth associated with pathological presenilin 1 loss-of-function mutations before the emergence of amyloid burden in mice.
    1. Neuroscience

    LTP and memory impairment caused by extracellular Aβ and Tau oligomers is APP-dependent

    Daniela Puzzo et al.
    Oligomeric Amyloid-β and Tau, two proteins involved in Alzheimer's disease pathogenesis, require Amyloid Precursor Protein to enter neurons and exert their detrimental effect on synaptic plasticity and memory.
    1. Cell Biology

    Sumoylation promotes optimal APC/C activation and timely anaphase

    Christine C Lee et al.
    The Anaphase Promoting Complex/Cyclosome is regulated by sumoylation to ensure timely mitotic exit in human cells.
    1. Cell Biology
    2. Neuroscience

    Presynaptic APP levels and synaptic homeostasis are regulated by Akt phosphorylation of huntingtin

    Julie Bruyère et al.
    Reducing Akt-mediated huntingtin phosphorylation decreases APP accumulation at the synapse by reducing its anterograde axonal transport and ameliorates learning and memory in a mouse model of familial Alzheimer disease.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    A structural mechanism for phosphorylation-dependent inactivation of the AP2 complex

    Edward A Partlow et al.
    Cryo-EM reveals how a protein called NECAP inactivates the AP2 clathrin adaptor complex through concerted engagement of two domains which confer specificity for membrane-activated and phosphorylated AP2.

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