195 results found
    1. Biochemistry and Chemical Biology

    Prefabrication of a ribosomal protein subcomplex essential for eukaryotic ribosome formation

    Cohue Peña, Sabina Schütz ... Vikram G Panse
    The ATPase Fap7 prefabricates a uS11:eS26 ribosomal protein complex for ribosome assembly.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A RanGTP-independent mechanism allows ribosomal protein nuclear import for ribosome assembly

    Sabina Schütz, Ute Fischer ... Vikram G Panse
    The Tsr2 carrier protein connects the nuclear import machinery with the ribosome assembly pathway.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Subfunctionalized expression drives evolutionary retention of ribosomal protein paralogs Rps27 and Rps27l in vertebrates

    Adele Francis Xu, Rut Molinuevo ... Maria Barna
    Ribosomal proteins Rps27 (eS27) and Rps27l (eS27L) are an ancient pair of duplicated genes that encode functionally interchangeable proteins, yet have been evolutionarily retained because both copies are necessary to achieve protein expression across cell types.
    1. Chromosomes and Gene Expression

    Oncogene expression from extrachromosomal DNA is driven by copy number amplification and does not require spatial clustering in glioblastoma stem cells

    Karin Purshouse, Elias T Friman ... Wendy A Bickmore
    In glioblastoma stem cells, oncogenes on extrachromosomal DNA do not cluster at distances in keeping with coordinated transcription, with amplified gene expression driven by copy number rather increased transcriptional efficiency.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    Fibroblast growth factors (FGFs) prime the limb specific Shh enhancer for chromatin changes that balance histone acetylation mediated by E26 transformation-specific (ETS) factors

    Silvia Peluso, Adam Douglas ... Robert E Hill
    FGF signalling is responsible for priming the developmental enhancer ZRS across the distal limb mesenchyme during development, allowing ETS factors to modulate its activity through balancing histone acetylation.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    The final step of 40S ribosomal subunit maturation is controlled by a dual key lock

    Laura Plassart, Ramtin Shayan ... Celia Plisson-Chastang
    Cryo-EM and functional studies reveal how combined action of proteins RPS26/eS26 and RIO1 allows late precursors to the human small ribosomal particle to be matured into fully translation-competent 40S subunits.
    1. Structural Biology and Molecular Biophysics

    Structures of translationally inactive mammalian ribosomes

    Alan Brown, Matthew R Baird ... Sichen Shao
    Mining electron cryomicroscopy data reveals new ribosomal interactions that preclude translation to potentially regulate gene expression.
    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, Cha San Koh ... Andrei A Korostelev
    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. Structural Biology and Molecular Biophysics

    Dual tRNA mimicry in the Cricket Paralysis Virus IRES uncovers an unexpected similarity with the Hepatitis C Virus IRES

    Vera P Pisareva, Andrey V Pisarev, Israel S Fernández
    A conformational change in the Cricket Paralysis Virus IRES upon double translocation in the ribosome uncovers an unexpected similarity with the Hepatitis C Virus IRES.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Concurrent remodelling of nucleolar 60S subunit precursors by the Rea1 ATPase and Spb4 RNA helicase

    Valentin Mitterer, Matthias Thoms ... Roland Beckmann
    The RNA helicase Spb4 restructures rRNA helices H62/H63 and primes pre-ribosomal 60S intermediates for large-scale remodelling by the AAA-ATPase Rea1.

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