2,939 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Complementary biosensors reveal different G-protein signaling modes triggered by GPCRs and non-receptor activators

    Mikel Garcia-Marcos
    Heterotrimeric G-proteins can be switched on not only by G-protein-coupled receptors but also by cytoplasmic proteins, resulting in different signaling mechanisms in cells depending on the specific type of activator.
    1. Cell Biology

    Disparate bone anabolic cues activate bone formation by regulating the rapid lysosomal degradation of sclerostin protein

    Nicole R Gould et al.
    Mechanical loading and the bone anabolic action of parathyroid hormone result in rapid, lysosomal degradation of sclerostin protein, revealing physiologically important post-translational control of this critical regulator of bone formation.
    1. Neuroscience

    Properties of multivesicular release from mouse rod photoreceptors support transmission of single-photon responses

    Cassandra L Hays et al.
    To improve the reliability of transmitting small single-photon voltage responses, rod photoreceptor cells release synaptic vesicles in regularly timed multivesicular events that are exquisitely sensitive to small voltage changes.
    1. Microbiology and Infectious Disease

    A mobile genetic element increases bacterial host fitness by manipulating development

    Joshua M Jones et al.
    A mobile genetic element provides a selective advantage to host cells by delaying development, including biofilm and spore formation, thereby enabling temporary cheating and extra divisions.
    1. Computational and Systems Biology
    2. Neuroscience

    Graphical-model framework for automated annotation of cell identities in dense cellular images

    Shivesh Chaudhary et al.
    Unbiased and automatic annotation using structured prediction framework with efficiently built data-driven atlases is more accurate than registration-based methods for cell identifications in dense images and enables fast whole-brain analysis.
    1. Biochemistry and Chemical Biology

    Time-resolved phosphoproteomics reveals scaffolding and catalysis-responsive patterns of SHP2-dependent signaling

    Vidyasiri Vemulapalli et al.
    Monitoring SHP2 phosphoproteome dynamics identifies new substrate sites and sites protected from dephosphorylation by its SH2 domains, highlighting distinct scaffolding and catalytic activities in effecting a transmembrane signaling response.
    1. Neuroscience

    Excitation of medium spiny neurons by ‘inhibitory’ ultrapotent chemogenetics via shifts in chloride reversal potential

    Stephanie C Gantz et al.
    Modifying membrane potential by an 'inhibitory' chloride conductance such as PSAM4-GlyR is inherently unstable because the normally low intracellular concentration of chloride is readily increased by influx of chloride.
    1. Cell Biology
    2. Developmental Biology

    A polarity pathway for exocyst-dependent intracellular tube extension

    Joshua Abrams, Jeremy Nance
    Lumen extension in intracellular tubes relies on a molecular pathway involving Rho GTPase signaling, cell polarity, and vesicle-tethering proteins.
    1. Cell Biology
    2. Computational and Systems Biology

    Quantifying absolute gene expression profiles reveals distinct regulation of central carbon metabolism genes in yeast

    Rosemary Yu et al.
    Global gene expression control mechanisms are modeled using a large dataset consisting of absolute-quantitative proteomics, transcriptomics, and partial metabolomics of Saccharomyces cerevisiae at a wide range of growth conditions.
    1. Developmental Biology

    Three-dimensional reconstruction of a whole insect reveals its phloem sap-sucking mechanism at nano-resolution

    Xin-Qiu Wang et al.
    3D reconstruction for an insect provides new internal structures at nanometer resolution, and the reconstructed feeding insect reveals unexpected contraction of stylet protractors and suggested a novel phloem sap-sucking model.

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