30 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A Ras-like domain in the light intermediate chain bridges the dynein motor to a cargo-binding region

    Courtney M Schroeder et al.
    The dynein light intermediate chain is a member of the G protein superfamily and links the motor to several intracellular cargo adaptors.
    1. Structural Biology and Molecular Biophysics

    Ribosome•RelA structures reveal the mechanism of stringent response activation

    Anna B Loveland et al.
    Cryo-EM structures of 70S•RelA ribosome complexes reveal how cognate deacyl-tRNA activates RelA.
    1. Microbiology and Infectious Disease

    Factors essential for L,D-transpeptidase-mediated peptidoglycan cross-linking and β-lactam resistance in Escherichia coli

    Jean-Emmanuel Hugonnet et al.
    Production of the L,D-transpeptidase YcbB and elevated synthesis of the (p)ppGpp alarmone reveals a new mode of peptidoglycan polymerization that bypasses the D,D-transpeptidase activity of PBPs and leads to broad-spectrum β-lactam resistance in Escherichia coli.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Discovery of methylfarnesoate as the annelid brain hormone reveals an ancient role of sesquiterpenoids in reproduction

    Sven Schenk et al.
    A small brain-derived lipid prevents bristle worms from entering maturation and death, challenging current views of hormone evolution and pesticide specificity.
    1. Cell Biology

    Functional dichotomy and distinct nanoscale assemblies of a cell cycle-controlled bipolar zinc-finger regulator

    Johann Mignolet et al.
    Forward genetics and super-resolution microscopy identifies ZitP as a conserved multifunctional regulator that accumulates at both cell extremities in distinct macromolecular structures to perform different functions in the asymmetric model bacterium Caulobacter crescentus.
    1. Chromosomes and Gene Expression

    The dynamic assembly of distinct RNA polymerase I complexes modulates rDNA transcription

    Eva Torreira et al.
    Live-cell imaging, genetic analysis and electron cryomicroscopy identify structural motifs involved in the differential assembly of Pol I-Rrn3 complexes and Pol I homodimers in response to nutrient availability.
    1. Microbiology and Infectious Disease

    Efficacy of β-lactam/β-lactamase inhibitor combination is linked to WhiB4-mediated changes in redox physiology of Mycobacterium tuberculosis

    Saurabh Mishra et al.
    Intrinsic tolerance of Mycobacterium tuberculosis toward the world's most successful antibacterials, β-lactams, is dependent on cytoplasmic redox potential and an intracellular redox-sensor WhiB4.
    1. Microbiology and Infectious Disease

    Cell differentiation defines acute and chronic infection cell types in Staphylococcus aureus

    Juan-Carlos García-Betancur et al.
    During Staphylococcus aureus infections, bacterial cells bifurcate into distinct, specialized cell types that localize physically in different colonization tissues to simultaneously generate different infection types.
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    Natural changes in light interact with circadian regulation at promoters to control gene expression in cyanobacteria

    Joseph Robert Piechura et al.
    Cyanobacteria cope with both predictable day/night changes and natural fluctuations in light during the day by adjusting the expression dynamics of circadian-clock-controlled genes via a network of transcriptional regulators.
    1. Biochemistry and Chemical Biology

    Tandem riboswitches form a natural Boolean logic gate to control purine metabolism in bacteria

    Madeline E Sherlock et al.
    A riboswitch class has been discovered for phosphoribosyl pyrophosphate, the biochemical precursor of nucleotides, and this novel RNA sensor commonly operates in tandem with a guanine aptamer to function like a Boolean logic gate.

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