137 results found
    1. Biochemistry and Chemical Biology
    2. Human Biology and Medicine

    Repression of ferritin light chain translation by human eIF3

    Mia C Pulos-Holmes et al.
    Human ferritin light chain (FTL) mRNA translation is regulated via its 5'-untranslated region (5'-UTR) by three mechanisms: RNA folding, iron response protein binding, and eukaryotic translation initiation factor eIF3 binding.
    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. Cell Biology
    2. Plant Biology

    Natural variation reveals that intracellular distribution of ELF3 protein is associated with function in the circadian clock

    Muhammad Usman Anwer et al.
    In Arabidopsis, a natural variant of the ELF3 protein, which originated in Central Asia, is less likely to accumulate in the nucleus, and causes the circadian clock to run faster and be less responsive to environmental cues.
    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. Chromosomes and Gene Expression

    Fail-safe control of translation initiation by dissociation of eIF2α phosphorylated ternary complexes

    Martin D Jennings et al.
    Phosphorylated translation initiation factor eIF2, a potent inhibitor of protein synthesis in eukaryotic cells, is also inhibitory to protein synthesis when bound to GTP and initiator tRNA broadening the reach and immediacy of eIF2-mediated control.
    1. Biochemistry and Chemical Biology

    Translation of 5′ leaders is pervasive in genes resistant to eIF2 repression

    Dmitry E Andreev et al.
    Most of the mRNAs whose translation is resistant to the stress-induced repression of protein synthesis contain upstream open reading frames that are efficiently translated under normal conditions.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Translational Control: An emergency brake for protein synthesis

    Vladislava Hronová, Leoš Shivaya Valášek
    The integrated stress response is able to rapidly shut down the synthesis of proteins in eukaryotic cells.
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    1. Cell Biology
    2. Neuroscience

    Cell Biology: Less translational control, more memory

    Graham D Pavitt
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    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Pharmacological dimerization and activation of the exchange factor eIF2B antagonizes the integrated stress response

    Carmela Sidrauski et al.
    A drug-like molecule called ISRIB, which activates the translation initiation factor eIF2B, antagonizes stress responses as diverse as protein misfolding and nutrient deprivation, and restores protein synthesis, enhancing memory.
    1. Neuroscience

    Role of the visual experience-dependent nascent proteome in neuronal plasticity

    Han-Hsuan Liu et al.
    A screen of visual-experience induced changes in newly-synthesized proteins in Xenopus optic tectum identifies unexpected candidate plasticity proteins.

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