45 results found
    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. 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. Chromosomes and Gene Expression

    A systematically-revised ribosome profiling method for bacteria reveals pauses at single-codon resolution

    Fuad Mohammad et al.
    With the removal of confounding artifacts, ribosome profiling can yield insight into the mechanism of protein synthesis in bacteria at high resolution.
    1. Biochemistry and Chemical Biology

    Allosteric mechanism of the V. vulnificus adenine riboswitch resolved by four-dimensional chemical mapping

    Siqi Tian et al.
    A new biochemical method tests whether or not the pre-existing RNA structural correlations couple small molecule binding to gene expression in a paradigmatic riboswitch.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure of RNA polymerase bound to ribosomal 30S subunit

    Gabriel Demo et al.
    Cryo-EM structures of the 30S*RNAP complex visualize co-localization of the transcription and translation machineries and provide insights into the transcription-translation synchrony, which coordinates gene expression in bacteria.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Operon mRNAs are organized into ORF-centric structures that predict translation efficiency

    David H Burkhardt et al.
    Operonic mRNAs in bacteria are comprised of ORF (open reading frame)-wide units of secondary structure, which are intrinsically distinct between adjacent ORFs and encode a rough blueprint for ORF-specific translation efficiency.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Extensive ribosome and RF2 rearrangements during translation termination

    Egor Svidritskiy et al.
    Ensemble cryo-EM visualizes how structural rearrangements poise the newly made protein and release factor RF2 to dissociate in preparation for ribosome recycling.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A genetic selection reveals functional metastable structures embedded in a toxin-encoding mRNA

    Sara Masachis et al.
    A genetic selection of toxicity suppressors coupled to high-throughput sequencing has captured metastable RNA structures that co-transcriptionally inhibit the translation of a bacterial toxin.
    1. Microbiology and Infectious Disease

    Loss of N1-methylation of G37 in tRNA induces ribosome stalling and reprograms gene expression

    Isao Masuda et al.
    Biochemical and genome-wide analysis demonstrates that m1G37 is important for tRNA aminoacylation and for the entire elongation cycle of protein synthesis.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    A nascent polypeptide sequence modulates DnaA translation elongation in response to nutrient availability

    Michele Felletti et al.
    Specific amino acids in the N-terminus of the replication initiator protein DnaA inhibit translation elongation upon carbon starvation, illustrating that the identity of the N-terminal amino acids of a protein can modulate protein synthesis yield under changing conditions.

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