101 results found
    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. Immunology and Inflammation

    Synergy and remarkable specificity of antimicrobial peptides in vivo using a systematic knockout approach

    Mark Austin Hanson et al.
    While antimicrobial cocktails are highly effective for defence against pathogenic microbes, the innate immune response may instead employ highly specific peptidic antibiotics to combat certain natural enemies.
    1. Cell Biology
    2. Neuroscience

    The postsynaptic t-SNARE Syntaxin 4 controls traffic of Neuroligin 1 and Synaptotagmin 4 to regulate retrograde signaling

    Kathryn P Harris et al.
    Syntaxin 4 regulates retrograde signaling in the postsynaptic compartment at Drosophila synapses by controlling trafficking of Neuroligin and Synaptotagmin 4 cargo.
    1. Cell Biology
    2. Human Biology and Medicine

    Impaired lysosomal acidification triggers iron deficiency and inflammation in vivo

    King Faisal Yambire et al.
    Impaired lysosomal acidification results in retention of iron inside lysosomes, triggering functional iron deficiency, dysfunctional mitochondria (especially mtDNA loss), and inflammation in vivo in a mouse model of lysosomal disease.
    1. Developmental Biology
    2. Neuroscience

    Temporal regulation of axonal repulsion by alternative splicing of a conserved microexon in mammalian Robo1 and Robo2

    Verity Johnson et al.
    ROBO isoforms with minute sequence variations have significant and distinct functions in axon guidance.
    1. Cell Biology

    Rab5 and Alsin regulate stress-activated cytoprotective signaling on mitochondria

    FoSheng Hsu et al.
    Oxidative stress leads to the translocation of Rab5 from endosome to mitochondria, regulated by ALS/Alsin, a component associated with amyotrophic lateral sclerosis, leading to mitochondrial-endosomal physical contacts and a cytoprotective response.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Hepatitis B virus core protein allosteric modulators can distort and disrupt intact capsids

    Christopher John Schlicksup et al.
    Small molecule antivirals that drive assembly of HBV capsid protein can also bind to pre-assembled capsids causing them to change morphology or even break, suggesting a complex transduction of binding effects across the capsid.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Site-specific monoubiquitination downregulates Rab5 by disrupting effector binding and guanine nucleotide conversion

    Donghyuk Shin et al.
    With monoubiquitination sites of Rab5 identified and structural and biochemical studies using chemically synthesized ubiquitinated Rab5, Rab5 monoubiquitination is found to downregulate the function of Rab5 in a site-dependent manner.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Ankyrin-B is a PI3P effector that promotes polarized α5β1-integrin recycling via recruiting RabGAP1L to early endosomes

    Fangfei Qu et al.
    Ankyrin-B – through interactions with PI3P lipids, dynactin and RabGAP1L – functions as a critical node in the protein circuitry underlying polarized recycling of α5β1-integrin to enable haptotaxis along fibronectin gradients.
    1. Cell Biology

    In vivo identification of GTPase interactors by mitochondrial relocalization and proximity biotinylation

    Alison K Gillingham et al.
    Relocation of Rab, Ras and Rho family GTPases to the surface of mitochondria enables efficient identification of their effectors, exchange factors and GAPs by proximity biotinylation.

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