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

    Ensemble cryo-EM uncovers inchworm-like translocation of a viral IRES through the ribosome

    Priyanka D Abeyrathne et al.
    An ensemble of cryo-EM structures reveals how eukaryotic elongation factor 2 positions the first codon of a viral mRNA for translation.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Translation initiation by the hepatitis C virus IRES requires eIF1A and ribosomal complex remodeling

    Zane A Jaafar et al.
    The hepatitis C virus IRES binds and remodels preassembled eukaryotic translation preinitiation complexes, using specific initiation factor protein within a "bacterial-like" mode of initiation that can function in both stressed and unstressed cells.
    1. Biochemistry and Chemical Biology

    Kinetics of initiating polypeptide elongation in an IRES-dependent system

    Haibo Zhang et al.
    The retarding effect of a ribosome-bound internal ribosome entry site on eukaryotic protein synthesis is largely overcome following translocation of tripeptidyl-tRNA.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural characterization of ribosome recruitment and translocation by type IV IRES

    Jason Murray et al.
    A Internal Ribosomal Entry Site RNA has been visualised by high resolution cryoEM, trapped in the ribosome in an intermediate state of translocation.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Single-protein detection in crowded molecular environments in cryo-EM images

    J Peter Rickgauer et al.
    High-resolution template matching makes small, densely embedded proteins detectable.
    1. Chromosomes and Gene Expression

    Histone H3G34R mutation causes replication stress, homologous recombination defects and genomic instability in S. pombe

    Rajesh K Yadav et al.
    Mutation of Glycine 34 to Arginine within the N-terminal tail of histone H3 alters post-translational modifications on Lysine 36 and is associated with a delay in replication restart, defective homologous recombination and an increase in genomic instability.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Control of AMPA receptor activity by the extracellular loops of auxiliary proteins

    Irene Riva et al.
    Glutamate receptor auxiliary proteins exert their effects on receptor gating through two divergent extracellular loops, explaining subunit specificity and allowing the construction of null versions that form complexes normally but do not modify receptor gating.
    1. Plant Biology

    A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination

    Wannarat Pornsiriwong et al.
    Molecular signals from chloroplasts can synergistically interact with the plant hormone, abscisic acid (ABA), to regulate non-canonical signaling pathways mediating fundamental cellular processes including stomatal closure, seed dormancy and germination.

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