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    1. Cell Biology
    2. Chromosomes and Gene Expression

    Sir2 phosphorylation through cAMP-PKA and CK2 signaling inhibits the lifespan extension activity of Sir2 in yeast

    Woo Kyu Kang et al.
    The deacetylase Sir2 fine-tunes transcription of PMA1 and other aging related genes in a cAMP-PKA and CK2 signaling dependent manner.
    1. Cell Biology

    Discrete spatial organization of TGFβ receptors couples receptor multimerization and signaling to cellular tension

    Joanna P Rys et al.
    Cells control the spatial organization and signaling of TGFβ receptors at focal adhesions via a mechanically regulated mechanism to integrate biochemical and physical cues.
    1. Computational and Systems Biology
    2. Developmental Biology

    Unipolar distributions of junctional Myosin II identify cell stripe boundaries that drive cell intercalation throughout Drosophila axis extension

    Robert J Tetley et al.
    Analysing Myosin II unipolar planar polarisation with high spatial and temporal resolution during Drosophila axis extension reveals how tissue boundaries drive polarized cell intercalation while limiting cell mixing.
    1. Biochemistry and Chemical Biology

    Non-enzymatic primer extension with strand displacement

    Lijun Zhou et al.
    Relying on RNA fragments derived from degradation or partial template copying, non-enzymatic primer extension with strand displacement offers a novel and prebiotically plausible approach to RNA self-replication.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A novel N-terminal extension in mitochondrial TRAP1 serves as a thermal regulator of chaperone activity

    James R Partridge et al.
    Cytosolic and organellar Hsp90s from higher eukaryotes have evolved a variable, and environmentally responsive N-terminal extension to regulate their activity.
    1. Cell Biology
    2. Developmental Biology

    Cytoskeletal tension and Bazooka tune interface geometry to ensure fusion fidelity and sheet integrity during dorsal closure

    Piyal Taru Das Gupta, Maithreyi Narasimha
    Restoration of molecular and morphological symmetry and mechanical integrity following epithelial fusion relies on adaptive changes that are mediated by cytoskeletal tension and Bazooka dependent modulation of fusing interface geometry.
    1. Developmental Biology

    Pitx2c orchestrates embryonic axis extension via mesendodermal cell migration

    Michelle M Collins et al.
    Expression of Pitx2c at the onset of gastrulation drives convergence and extension movements in the zebrafish embryo by promoting downstream pathways affecting chemokine signaling, integrin-ECM interactions, and planar cell polarity components.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Environmental changes in oxygen tension reveal ROS-dependent neurogenesis and regeneration in the adult newt brain

    L Shahul Hameed et al.
    Control of neural stem cells by reactive oxygen species (ROS) provides a link between systemic shifts in oxygen tension and neuronal regeneration, and suggests an evolutionary driving force for the inherent ability of newts to regenerate their brain cells.
    1. Plant Biology

    A tension-adhesion feedback loop in plant epidermis

    Stéphane Verger et al.
    Tensile stress patterns in tissues are revealed by cell-cell adhesion defects; in turn, cell responses to supracellular tension require cell-cell adhesion.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Modulation of formin processivity by profilin and mechanical tension

    Luyan Cao et al.
    Profilin helps to maintain formin at the growing barbed end of an actin filament, while piconewton mechanical tension drastically enhances formin dissociation from the barbed end.