5,402 results found
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures of the autoinhibited E. coli ATP synthase in three rotational states

    Meghna Sobti et al.
    A molecular model that provides a framework for interpreting the wealth of functional information obtained on the E. coli F-ATP synthase has been generated using cryo-electron microscopy.
    1. Chromosomes and Gene Expression

    Translational initiation in E. coli occurs at the correct sites genome-wide in the absence of mRNA-rRNA base-pairing

    Kazuki Saito et al.
    E. coli ribosomes incapable of base-pairing with the Shine-Dalgarno sequence are still selective for annotated start sites, indicating these sites are hard-wired for initiation by other mRNA features.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM reveals distinct conformations of E. coli ATP synthase on exposure to ATP

    Meghna Sobti et al.
    Cryo-EM studies reveal that incubation with ATP produces conformational intermediates of E. coli ATP synthase, in which the ε subunit is no longer in its autoinhibitory conformation.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    mRNA-programmed translation pauses in the targeting of E. coli membrane proteins

    Nir Fluman et al.
    Translation pauses occur in strategic positions to facilitate the production of properly folded membrane proteins in bacteria.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Initiation of chromosome replication controls both division and replication cycles in E. coli through a double-adder mechanism

    Guillaume Witz et al.
    Single-cell measurements combined with a new statistical framework for discriminating between models of cell cycle regulation show that chromosome initiation controls the E. coli cell cycle via two adder mechanisms.
    1. Cell Biology

    Spatial organization shapes the turnover of a bacterial transcriptome

    Jeffrey R Moffitt et al.
    Transcriptome-scale RNA imaging and lifetime measurements reveal that the E. coli transcriptome is spatially organized and that this organization modulates the post-transcriptional fate of bacterial mRNAs.
    1. Microbiology and Infectious Disease

    Membrane voltage dysregulation driven by metabolic dysfunction underlies bactericidal activity of aminoglycosides

    Giancarlo Noe Bruni, Joel M Kralj
    Aminoglycosides are a class of antibiotics that can kill Escherichia coli by building up internal voltage through disrupting the normal consumption of ATP.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    E. coli TraR allosterically regulates transcription initiation by altering RNA polymerase conformation

    James Chen et al.
    Cryo-electron microscopy structures, combined with biochemical experiments, show how the E. coli F element-encoded TraR protein regulates transcription initiation by altering RNA polymerase conformation and conformational heterogeneity.
    1. Evolutionary Biology

    RNA chaperones buffer deleterious mutations in E. coli

    Marina Rudan et al.
    The overexpression of RNA chaperones, including several DEAD box RNA helicases, enhances the fitness of mutationally compromised E. coli strains.
    1. Biochemistry and Chemical Biology

    Ribosome surface properties may impose limits on the nature of the cytoplasmic proteome

    Paul E Schavemaker et al.
    The diffusion coefficients of proteins in the cytoplasm depend on their net charge and the distribution of charge over the protein surface, with positive proteins moving up to 100-fold slower because they bind to ribosomes.

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