469 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Extraction of active RhoGTPases by RhoGDI regulates spatiotemporal patterning of RhoGTPases

    Adriana E Golding et al.
    Through visualization of directly-labeled RhoGTPase both in vitro and in vivo, RhoGDI is found to spatiotemporally regulate RhoGTPase activity through the extraction of active RhoGTPase.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Peroxiredoxin promotes longevity and H2O2-resistance in yeast through redox-modulation of protein kinase A

    Friederike Roger et al.
    The major cytosolic yeast peroxiredoxin Tsa1 controls aging and H2O2-resistance by inhibiting protein kinase A through a conserved cysteine in the catalytic subunit activation loop and not by scavenging H2O2.
    1. Cell Biology

    The RhoGAP activity of CYK-4/MgcRacGAP functions non-canonically by promoting RhoA activation during cytokinesis

    Donglei Zhang, Michael Glotzer
    Activation of the key regulator of cytokinesis, RhoA, involves an unexpected contribution by a RhoGAP domain.
    1. Cell Biology
    2. Developmental Biology

    The Rho-guanine nucleotide exchange factor PDZ-RhoGEF governs susceptibility to diet-induced obesity and type 2 diabetes

    Ying-Ju Chang et al.
    PDZ-RhoGEF controls adipose tissue abundance and whole body metabolism.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    An updated phylogeny of the Alphaproteobacteria reveals that the parasitic Rickettsiales and Holosporales have independent origins

    Sergio A Muñoz-Gómez et al.
    Diverse sophisticated phylogenetic analyses update the phylogeny of the Alphaproteobacteria and show that the parasitic Holosporales is a derived group within the Rhodospirillales order which comprises primarily free-living alphaproteobacteria.
    1. Evolutionary Biology

    Microbial eukaryotes have adapted to hypoxia by horizontal acquisitions of a gene involved in rhodoquinone biosynthesis

    Courtney W Stairs et al.
    A number of microbial eukaryotes have adapted to low oxygen conditions by acquiring a gene that allows their mitochondrial electron transport chain to continue to function when oxygen is scarce.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    In-host population dynamics of Mycobacterium tuberculosis complex during active disease

    Roger Vargas et al.
    Bulk whole genome sequencing data can be used to study the genetic variation present in pathogenic bacterial populations over the time-course of a single infection within a host.
    1. Ecology

    Group size and composition influence collective movement in a highly social terrestrial bird

    Danai Papageorgiou, Damien Roger Farine
    High-resolution GPS data revealed a quadratic relationship between group size and movement, with vulturine guineafowl groups of intermediate size exhibiting the largest home-range size and greater variation in site use.
    1. Neuroscience

    Latrophilin-2 and latrophilin-3 are redundantly essential for parallel-fiber synapse function in cerebellum

    Roger Shen Zhang et al.
    Knockout of both latrophilin-2 and latrophilin-3 from Purkinje cells in mice selectively impairs parallel-fiber synapses, revealing a redundant but critical function for latrophilins at specific synapses.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    The dual role of chloride in synaptic vesicle glutamate transport

    Roger Chang et al.
    Whole endosome recording shows that chloride interacts with vesicular glutamate transporters as both allosteric activator and permeant ion, and although the mode of permeation differs, chloride and glutamate use a related conduction pathway.

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