1,652 results found
    1. Cell Biology

    Magnetic resonance measurements of cellular and sub-cellular membrane structures in live and fixed neural tissue

    Nathan H Williamson et al.
    Low-field single-sided magnetic resonance diffusion methods detect and measure permeability of sub-micron compartments which likely include cell processes, organelles, and cellular vesicles within ex vivo mouse spinal cords.
    1. Neuroscience

    Noninvasive quantification of axon radii using diffusion MRI

    Jelle Veraart et al.
    Cell-specific architectural properties such as the axon diameter of the white matter of the human brain can be quantified accurately and non-invasively using diffusion magnetic resonance imaging.
    1. Neuroscience

    Long-term potentiation is independent of the C-tail of the GluA1 AMPA receptor subunit

    Javier Díaz-Alonso et al.
    Despite being the key element of the classic model for excitatory synaptic plasticity, the cytoplasmic AMPA receptor C-tail is not required for hippocampal LTP.
    1. Developmental Biology
    2. Physics of Living Systems

    Nuclear crowding and nonlinear diffusion during interkinetic nuclear migration in the zebrafish retina

    Afnan Azizi et al.
    The evolving spatial distribution of nuclei between apical and basal surfaces of the developing retinal neuroepithelium is quantitatively described by a nonlinear diffusion equation accounting for crowding within the tissue.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Biophysical clocks face a trade-off between internal and external noise resistance

    Weerapat Pittayakanchit et al.
    Molecular clocks that are robust to external fluctuations are vulnerable to internal fluctuations and vice versa.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Protein sequences bound to mineral surfaces persist into deep time

    Beatrice Demarchi et al.
    A chemically unstable ostrich eggshell peptide survives for at least 3.8 million years at the equator, stabilized by strong mineral interactions.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    In vivo single-cell lineage tracing in zebrafish using high-resolution infrared laser-mediated gene induction microscopy

    Sicong He et al.
    Infrared laser-mediated gene induction microscopy enables precise single-cell labeling in various tissues of zebrafish, and in vivo visualized single-cell lineage tracing reveals the lineage heterogeneity in hematopoietic endothelial cells.
    1. Structural Biology and Molecular Biophysics

    On the importance of statistics in molecular simulations for thermodynamics, kinetics and simulation box size

    Vytautas Gapsys, Bert L de Groot
    The use of adequate statistics is demonstrated to be an essential prerequisite to derive conclusions on thermodynamics and kinetics from molecular simulations.
    1. Neuroscience

    Correcting for physical distortions in visual stimuli improves reproducibility in zebrafish neuroscience

    Timothy W Dunn, James E Fitzgerald
    Computational analyses quantitatively account for optical refraction at air-water interfaces to enable visual neuroscientists to present distortion-free stimuli to underwater animals.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    The transpeptidase PBP2 governs initial localization and activity of the major cell-wall synthesis machinery in E. coli

    Gizem Özbaykal et al.
    For initiation of cell-wall insertion, the cross-linking enzyme PBP2 stably binds to a component of the cell envelope that is different from MreB filaments.

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