5,548 results found
    1. Chromosomes and Gene Expression

    GAF is essential for zygotic genome activation and chromatin accessibility in the early Drosophila embryo

    Marissa M Gaskill et al.
    Following fertilization, the pioneering transcription factors GAGA factor (GAF) and Zelda are independently required to reprogram the zygotic genome of Drosophila and activate the first wave of gene expression.
    1. Structural Biology and Molecular Biophysics

    Translational initiation factor eIF5 replaces eIF1 on the 40S ribosomal subunit to promote start-codon recognition

    Jose Luis Llácer et al.
    The N-terminal domain (NTD) of the initiation factor eIF5 bound to the 40S subunit at the precise location vacated by eIF1 promotes tRNAi accommodation at AUG codons.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM visualization of the ribosome in termination complex with apo-RF3 and RF1

    Jesper Pallesen et al.
    Cryo-electron microscopy has been used to provide a structural interpretation of the complete action cycle of release factor 3 during translation termination, which includes a coordinated sequence of interactions with a class-I release factor and the ribosome.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The translation elongation factor eEF1A1 couples transcription to translation during heat shock response

    Maria Vera et al.
    Eukaryotic translation elongation factor 1A1 controls the process of heat shock response, from transcriptional activation of the HSP70 gene, to HSP70 mRNA stabilization, nuclear export, and translation.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Vasohibin1, a new mouse cardiomyocyte IRES trans-acting factor that regulates translation in early hypoxia

    Fransky Hantelys et al.
    In mouse cardiomyocytes, (lymph)angiogenic growth factors are induced during early hypoxia by a translational mechanism involving a new IRES trans-acting factor, vasohibin-1.
    1. Biochemistry and Chemical Biology

    A dynamic RNA loop in an IRES affects multiple steps of elongation factor-mediated translation initiation

    Marisa D Ruehle et al.
    During initiation factor-independent RNA structure-driven translation initiation, a flexible RNA element drives the movement of a viral IRES through the ribosome's tRNA binding sites and promotes tRNA binding.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Discovery of a small molecule that inhibits bacterial ribosome biogenesis

    Jonathan M Stokes et al.
    The anticonvulsant drug lamotrigine inhibits bacterial ribosome biogenesis and reveals an unexplored role for initiation factor 2 (IF2) in ribosome assembly.
    1. Cancer Biology
    2. Cell Biology

    The eukaryotic translation initiation factor eIF4E harnesses hyaluronan production to drive its malignant activity

    Hiba Ahmad Zahreddine et al.
    The eukaryotic translation initiation factor eIF4E induces hyaluronic acid (HA) synthesis to drive cancer metastasis which can be reversed following eIF4E inhibition and HA degradation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Eukaryotic translation initiation factor 3 plays distinct roles at the mRNA entry and exit channels of the ribosomal preinitiation complex

    Colin Echeverría Aitken et al.
    Eukaryotic translation initiation factor 3 (eIF3) is required to stabilize the binding of mRNA at the exit channel of the small ribosomal subunit and acts at the entry channel to accelerate mRNA recruitment to the translation preinitiation complex.
    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.

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