920 results found
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    IP3 mediated global Ca2+ signals arise through two temporally and spatially distinct modes of Ca2+ release

    Jeffrey T Lock, Ian Parker
    Cell-wide Ca2+ signals that regulate numerous cellular functions comprise dual Ca2+ release modes through IP3 receptors, punctate transients mediated by clustered receptors and spatiotemporally diffuse release through functionally distinct receptors.
    1. Developmental Biology

    Nodal and planar cell polarity signaling cooperate to regulate zebrafish convergence and extension gastrulation movements

    Margot LK Williams, Lilianna Solnica-Krezel
    Nodal signaling regulates gastrulation cell behaviors largely in parallel with planar cell polarity signaling and is sufficient for ex vivo extension of embryonic explants.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures and functional properties of CALHM channels of the human placenta

    Katarzyna Drożdżyk et al.
    Members of the calcium homeostasis modulator family expressed in the placenta form large channels with unknown activation properties that harbor a lipid bilayer on the inside of a cylindrical pore.
    1. Neuroscience

    Synergistic actions of v-SNARE transmembrane domains and membrane-curvature modifying lipids in neurotransmitter release

    Madhurima Dhara et al.
    Naturally-occurring v-SNARE TMD variants differentially regulate fusion pore dynamics and cooperate with phospholipids in supporting membrane curvature at the fusion pore neck.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Lipid accumulation controls the balance between surface connection and scission of caveolae

    Madlen Hubert et al.
    Caveolae sense the membrane lipid composition, which influences their dynamic behavior at the cell surface.
    1. Neuroscience

    Acetylcholine acts on songbird premotor circuitry to invigorate vocal output

    Paul I Jaffe, Michael S Brainard
    The neuromodulator acetylcholine contributes to state-dependent modulation of motor vigor and variability by direct action on songbird premotor cortex, bypassing basal ganglia circuitry.
    1. Biochemistry and Chemical Biology

    A dynamic interaction between CD19 and the tetraspanin CD81 controls B cell co-receptor trafficking

    Katherine J Susa et al.
    The tetraspanin CD81 uses its ectodomain to export CD19, and the interaction of the two proteins is dynamically regulated by B cell activation state.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Progenitors oppositely polarize WNT activators and inhibitors to orchestrate tissue development

    Irina Matos et al.
    Progenitors establish a single-cell length WNT morphogen gradient to transmit signals directionally and differentially to neighbors.
    1. Neuroscience

    Synergism of type 1 metabotropic and ionotropic glutamate receptors in cerebellar molecular layer interneurons in vivo

    Jin Bao et al.
    During parallel fibre activity in vivo, postsynaptic mGluR1 receptors in molecular layer interneurons of the cerebellar cortex are engaged in a frequency-dependent manner and in concert with inotropic glutamate receptors.
    1. Neuroscience

    Probabilistic, spinally-gated control of bladder pressure and autonomous micturition by Barrington’s nucleus CRH neurons

    Hiroki Ito et al.
    Ponto-spinal CRH neurons in Barrington’s nucleus are a core component of an inferential circuit that regulates autonomous micturition and generates voids when the bladder is full.

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