30 results found
    1. Cell Biology

    Prickle isoforms determine handedness of helical morphogenesis

    Bomsoo Cho et al.
    The Pkpk and Pksple isoforms of the Prickle protein determine right- or left-handed bristle morphogenesis by coupling Frizzled/Vang signaling to the Fat/Dachsous PCP directional signal in opposite directions.
    1. Developmental Biology

    Chiral cell sliding drives left-right asymmetric organ twisting

    Mikiko Inaki et al.
    Left-right asymmetric rotation of the Drosophila hindgut is driven by "cell sliding," a novel cellular behavior induced by chiral cell deformation, in which cells change their position relative to subjacent neighbors as sliding directionally.
    1. Cell Biology

    Philosophy of Biology: Drawing and the dynamic nature of living systems

    Gemma Anderson et al.
    Drawing may be a way to better understand a biological process and to explore and develop scientific ideas.
    1. Cell Biology
    2. Physics of Living Systems

    Morphogenetic degeneracies in the actomyosin cortex

    Sundar Ram Naganathan et al.
    Distinct molecular functions contribute to the same material property at larger scales leading to degenerate functionality.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Physical limits of flow sensing in the left-right organizer

    Rita R Ferreira et al.
    Large-scale in vivo imaging of the zebrafish left-right organizer (Kupffer's vesicle) combined with fluid dynamics calculations allows to quantitatively test the possible flow detection mechanisms and supports the flow transport of chemical signals as the mechanism of side determination.
    1. Cell Biology

    Centriolar SAS-7 acts upstream of SPD-2 to regulate centriole assembly and pericentriolar material formation

    Kenji Sugioka et al.
    A genetic screen and live cell imaging show that a newly identified coiled-coil protein called SAS-7 is the earliest acting factor in centriole assembly yet identified in the roundworm Caenorhabditis elegans.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Lysosomal membrane glycoproteins bind cholesterol and contribute to lysosomal cholesterol export

    Jian Li, Suzanne R Pfeffer
    LAMP proteins, the major glycoproteins of the lysosome membrane, bind cholesterol directly and specifically, and interact with NPC1 and NPC2 proteins as part of the lysosomal cholesterol export process.
    1. Structural Biology and Molecular Biophysics

    The near-atomic cryoEM structure of a flexible filamentous plant virus shows homology of its coat protein with nucleoproteins of animal viruses

    Xabier Agirrezabala et al.
    The high-resolution structure of a filamentous flexible plant virus shows that there is structural homology between its coat protein and the nucleoproteins of an unrelated group of enveloped RNA animal viruses.
    1. Physics of Living Systems
    2. Human Biology and Medicine

    Rheotaxis facilitates upstream navigation of mammalian sperm cells

    Vasily Kantsler et al.
    Mammalian sperm subject to shear flow swim in upstream spirals along the walls bounding such flows, thereby demonstrating a robust mechanism for upstream navigation to the ovum.
    1. Structural Biology and Molecular Biophysics
    2. Immunology and Inflammation

    Structural basis for the prion-like MAVS filaments in antiviral innate immunity

    Hui Xu et al.
    Mitochondrial anti-viral signaling proteins form three-stranded helical filaments in launching innate immune responses against RNA viruses.

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