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

    Molecular mechanism for direct actin force-sensing by α-catenin

    Lin Mei et al.
    Biophysical and structural studies reveal how low piconewton forces across actin enhance binding by the critical cell-cell adhesion protein α-catenin versus its force insensitive homolog vinculin.
    1. Developmental Biology
    2. Physics of Living Systems

    Size-dependent patterns of cell proliferation and migration in freely-expanding epithelia

    Matthew A Heinrich et al.
    Epithelia exhibit size-dependent growth dynamics caused by a decoupling between boundary and bulk cellular dynamics that enable robust expansion and drive cell cycling, collective migration, and tissue-spanning vortices.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Genomic architecture and evolutionary antagonism drive allelic expression bias in the social supergene of red fire ants

    Carlos Martinez-Ruiz et al.
    Analyses of allelic- and socially-biased gene expression reveal that suppressed recombination causes most of the expression differences in the social supergene, with only few differences due to socially antagonistic selection.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The Sec1/Munc18 protein Vps45 holds the Qa-SNARE Tlg2 in an open conformation

    Travis J Eisemann et al.
    Whereas in a paradigmatic structure an SM protein chaperone clamps its client SNARE shut, a second structure demonstrates that an SM protein can also hold its SNARE open to promote assembly.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Reconstitution reveals two paths of force transmission through the kinetochore

    Grace E Hamilton et al.
    Two components of the inner kinetochore (OA and Mif2) are independently capable of transmitting physiologically relevant forces to a centromeric nucleosome.
    1. Cell Biology
    2. Developmental Biology

    CytoCensus, mapping cell identity and division in tissues and organs using machine learning

    Martin Hailstone et al.
    Easy-to-use image analysis software enables single cell quantitation of cell types and division rates in complex 3D tissues including living Drosophila brains, mouse embryos and Zebrafish organoids.
    1. Structural Biology and Molecular Biophysics

    Top-down machine learning approach for high-throughput single-molecule analysis

    David S White et al.
    A new analysis algorithm (DISC) enables accurate analysis of data from high-throughput single-molecule paradigms and reveals a non-cooperative binding mechanism of cyclic nucleotide-binding domains from HCN ion channels.
    1. Structural Biology and Molecular Biophysics

    Limited dishevelled/Axin oligomerization determines efficiency of Wnt/β-catenin signal transduction

    Wei Kan et al.
    In vitro and in cellulo characterization of oligomerization by the cytoplasmic Wnt effector dishevelled and its partner Axin provide new mechanistic principles for Wnt/β-catenin signaling.
    1. Developmental Biology
    2. Neuroscience

    Expansion microscopy of C. elegans

    Chih-Chieh (Jay) Yu et al.
    Fixed, intact animals of C. elegans can be physically expanded with high isotropy, to enable super-resolved imaging of general proteins and nucleic acids throughout the organism, on conventional microscopes.
    1. Physics of Living Systems
    2. Cell Biology

    The axonal actin-spectrin lattice acts as a tension buffering shock absorber

    Sushil Dubey et al.
    A linear array of spectrin tetramers imparts mechanical stability to axons by allowing spectrin domains to unfold reversibly when an axon is stretched, thereby acting as tension buffers.

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