568 results found
    1. Structural Biology and Molecular Biophysics

    A calcium transport mechanism for atrial fibrillation in Tbx5-mutant mice

    Wenli Dai et al.
    TBX5-loss associated cardiomyocyte ectopy and atrial fibrillation is prevented by augmentation of SERCA2 activity, establishing a mechanism underlying the genetic basis for a Ca2+-dependent pathway for AF risk.
    1. Neuroscience

    Analysis of protein phosphorylation in nerve terminal reveals extensive changes in active zone proteins upon exocytosis

    Mahdokht Kohansal-Nodehi et al.
    Global phosphoproteomic analysis in nerve terminal during exocytosis reveals 252 uniquely regulated phosphosites, highlighting complex regulation of active zone proteins at multiple sites and the role of specific kinases/phosphatases.
    1. Developmental Biology

    Calcium handling precedes cardiac differentiation to initiate the first heartbeat

    Richard CV Tyser et al.
    High-resolution live imaging reveals how and when the mouse heart first starts to beat during development and how the onset of beating impacts on heart muscle cell maturation and heart formation.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Structural determinants of voltage-gating properties in calcium channels

    Monica L Fernández-Quintero et al.
    Structure modeling, site-directed mutagenesis, and current recordings revealed the mechanism by which stabilization of voltage sensors in the resting and activated states determines the gating properties of the CaV1.1 calcium channel.
    1. Cell Biology

    KChIP3 coupled to Ca2+ oscillations exerts a tonic brake on baseline mucin release in the colon

    Gerard Cantero-Recasens et al.
    KChIP3 localisation by intracellular calcium oscillations controls mucin release from colonic goblet cells.
    1. Ecology
    2. Genetics and Genomics

    Novel adverse outcome pathways revealed by chemical genetics in a developing marine fish

    Elin Sørhus et al.
    Global gene expression analysis unravels the underlying mechanisms for distinct crude oil induced defects in Atlantic haddock eggs and larvae.
    1. Cell Biology

    TRPM5-mediated calcium uptake regulates mucin secretion from human colon goblet cells

    Sandra Mitrovic et al.
    Goblet cells secrete mucins—which are key components of mucus—in a process that is regulated by calcium ions, which enter the goblet cells via a mechanism involving a channel protein called TRPM5.
    1. Neuroscience

    Dendritic sodium spikes are required for long-term potentiation at distal synapses on hippocampal pyramidal neurons

    Yujin Kim et al.
    At distal synapses onto hippocampal CA1 pyramidal neurons, synaptic plasticity is dependent on dendritically initiated sodium spikes, thus establishing a new role for voltage-gated sodium channels in the dendrites that may have important implications for how learning rules are implemented.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Dynamics of the IFT machinery at the ciliary tip

    Alexander Chien et al.
    During intraflagellar transport (IFT), kinesin-II dissociates from IFT trains at the flagellar tip and its diffusion in flagella serves as a negative feedback mechanism that facilitates flagellar length control in Chlamydomonas.
    1. Structural Biology and Molecular Biophysics

    Structural analysis of autoinhibition in the Ras-specific exchange factor RasGRP1

    Jeffrey S Iwig et al.
    A key activator of Ras signaling adopts an autoinhibited, dimeric conformation that is activated by membrane and calcium binding.

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