3,121 results found
    1. Structural Biology and Molecular Biophysics

    Mechanism of completion of peptidyltransferase centre assembly in eukaryotes

    Vasileios Kargas, Pablo Castro-Hartmann ... Alan John Warren
    Cryo-EM reveals how the central functional site of the ribosome is assembled and provides a framework to interpret the consequences of mutations linked to leukaemia-associated ribosomopathies.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The packing density of a supramolecular membrane protein cluster is controlled by cytoplasmic interactions

    Elisa Merklinger, Jan-Gero Schloetel ... Thorsten Lang
    A hierarchical model explains the self-organization of membrane microdoomaims.
    1. Structural Biology and Molecular Biophysics

    Structure of Escherichia coli respiratory complex I reconstituted into lipid nanodiscs reveals an uncoupled conformation

    Piotr Kolata, Rouslan G Efremov
    The dynamic structure of respiratory complex I from mesophilic bacterium is revealed and demonstrates existence of uncoupled conformations in the bacterial complex.
    1. Cell Biology

    Hsf1 and the molecular chaperone Hsp90 support a ‘rewiring stress response’ leading to an adaptive cell size increase in chronic stress

    Samarpan Maiti, Kaushik Bhattacharya ... Didier Picard
    Human cells adapt to chronic mild stresses, such as slightly elevated temperature, by getting larger in a process that couples increased translation to increased cell size in an Hsp90-dependent manner.
    1. Cell Biology
    2. Physics of Living Systems

    Dependence of diffusion in Escherichia coli cytoplasm on protein size, environmental conditions, and cell growth

    Nicola Bellotto, Jaime Agudo-Canalejo ... Victor Sourjik
    Diffusion of differently sized proteins in bacterial cytoplasm is nearly Brownian and consistent with the Stokes-Einstein relation, once protein shape and cell geometry are taken into account, and effects of various perturbation can be described as changes in cytoplasmic viscosity.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Structure of bacterial cytoplasmic chemoreceptor arrays and implications for chemotactic signaling

    Ariane Briegel, Mark S Ladinsky ... Grant J Jensen
    Bacterial cytoplasmic chemoreceptors assemble into a sandwich of two hexagonally packed arrays.
    1. Cell Biology

    Calcium transients trigger switch-like discharge of prostaglandin E2 in an extracellular signal-regulated kinase-dependent manner

    Tetsuya Watabe, Shinya Yamahira ... Kenta Terai
    Prostaglandin E2-mediated radial spread of PKA activation, caused by calcium transients, is a novel mode of intercellular communication in living mice.
    1. Cell Biology
    2. Physics of Living Systems

    Variations of intracellular density during the cell cycle arise from tip-growth regulation in fission yeast

    Pascal D Odermatt, Teemu P Miettinen ... Fred Chang
    The density of the cytoplasm in S. pombe varies in time and space during the cell cycle through modulation of tip growth rate coupled with constant mass growth rate.
    1. Developmental Biology

    A novel mechanism of gland formation in zebrafish involving transdifferentiation of renal epithelial cells and live cell extrusion

    Richard W Naylor, Hao-Han G Chang ... Alan J Davidson
    A rare example of direct transdifferentiation is discovered in zebrafish in which kidney epithelial cells change into an endocrine gland and undergo live-cell extrusion from the renal tubule.
    1. Cell Biology

    Novel origin of lamin-derived cytoplasmic intermediate filaments in tardigrades

    Lars Hering, Jamal-Eddine Bouameur ... Georg Mayer
    A newly discovered cytoplasmic intermediate filament in water bears may help these animals to resist extreme environmental conditions.

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