6,646 results found
    1. Cell Biology

    A new family of StART domain proteins at membrane contact sites has a role in ER-PM sterol transport

    Alberto T Gatta et al.
    A new family of sterol-specific lipid transfer proteins has been found that anchors in the endoplasmic reticulum; some of these proteins stretch across membrane contacts and mediate sterol traffic from the plasma membrane.
    1. Cell Biology

    GRAM domain proteins specialize functionally distinct ER-PM contact sites in human cells

    Marina Besprozvannaya et al.
    Functionally distinct ER-PM domains in human cells are defined by conserved GRAM domain containing proteins.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Movement of accessible plasma membrane cholesterol by the GRAMD1 lipid transfer protein complex

    Tomoki Naito et al.
    GRAMD1 proteins sense a transient expansion of the accessible pool of plasma membrane cholesterol and facilitate its transport to the endoplasmic reticulum at ER-PM contact sites.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Aim24 and MICOS modulate respiratory function, tafazzin-related cardiolipin modification and mitochondrial architecture

    Max Emanuel Harner et al.
    Interactions between Aim24 and the mitochondrial outer and inner membrane contact site complex (MICOS) are essential for mitochondrial ultrastructure, lipid composition and oxidative phosphorylation.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Kv2.1 mediates spatial and functional coupling of L-type calcium channels and ryanodine receptors in mammalian neurons

    Nicholas C Vierra et al.
    A potassium channel, as a nonconducting function, organizes compartmentalized neuronal calcium signaling microdomains via structural and functional coupling of plasma membrane and endoplasmic reticulum calcium channels.
    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. Cell Biology

    Mfn2 ubiquitination by PINK1/parkin gates the p97-dependent release of ER from mitochondria to drive mitophagy

    Gian-Luca McLelland et al.
    A crucial step during the mitophagy cascade involves the disassembly of connections between mitochondria and the endoplasmic reticulum via the retrotranslocation of Mfn2 tethering complexes by the Parkinson's disease genes PARKIN and PINK1, as well as the ATPase VCP/p97.
    1. Cell Biology

    Human VPS13A is associated with multiple organelles and influences mitochondrial morphology and lipid droplet motility

    Wondwossen M Yeshaw et al.
    VPS13A is associated with the endoplasmic reticulum, mitochondria and lipid droplets and is required for cellular processes that require interaction between these organells.
    1. Neuroscience

    Expanded genetic screening in Caenorhabditis elegans identifies new regulators and an inhibitory role for NAD+ in axon regeneration

    Kyung Won Kim et al.
    A function-based genetic screen using the Caenorhabditis elegans axotomy model identifies new regulators and an inhibitory role for NAD+ in axon regeneration, expanding the understanding of axon injury responses and regeneration.
    1. Cell Biology
    2. Neuroscience

    Astrocytes refine cortical connectivity at dendritic spines

    W Christopher Risher et al.
    Spines with multiple excitatory contacts are potential sites for competition between thalamic and cortical axons, which is regulated by the astrocytes through the secreted synaptogenic protein hevin.

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