380 results found
    1. Biochemistry and Chemical Biology

    The aspartyl protease DDI2 activates Nrf1 to compensate for proteasome dysfunction

    Shun Koizumi et al.
    Peptidase activity of DDI2 is required to activate Nrf1 in order to enable proteasome recovery in response to proteasome inhibition.
    1. Chromosomes and Gene Expression
    2. Stem Cells and Regenerative Medicine

    TERRA regulate the transcriptional landscape of pluripotent cells through TRF1-dependent recruitment of PRC2

    Rosa María Marión et al.
    Telomeric TRF1 controls the transcriptional programmes of pluripotent stem cells by recruiting PRC2 to pluripotency and differentiation genes by controlling the expression of those gene sites and the binding of TERRA RNAs to them.
    1. Immunology and Inflammation

    Natural Tr1-like cells do not confer long-term tolerogenic memory

    Koshika Yadava et al.
    Natural Tr1-like cells do not form a functionally stable memory response to allergens, and this instability may limit efforts to re-establish tolerance by expanding Tr1.
    1. Cell Biology

    p97-dependent retrotranslocation and proteolytic processing govern formation of active Nrf1 upon proteasome inhibition

    Senthil K Radhakrishnan et al.
    The enzyme p97/VCP regulates the activity of the transcription factor Nrf1 to promote increased transcription of genes that encode proteasome subunits following inhibition of the proteasome.
    1. Cell Biology
    2. Developmental Biology

    Proteasome dysfunction triggers activation of SKN-1A/Nrf1 by the aspartic protease DDI-1

    Nicolas J Lehrbach, Gary Ruvkun
    Post-translational processing of the SKN-1A/Nrf1 transcription factor regulates proteasome expression.
    1. Cell Biology

    Proteasomes: Nrf1 to the rescue

    Jin Ye
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    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova et al.
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    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. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Cryo-EM structure of the SAGA and NuA4 coactivator subunit Tra1 at 3.7 angstrom resolution

    Luis Miguel Díaz-Santín et al.
    An atomic model of the 3744-residue Tra1 protein reveals multiple transcription activator binding sites, its integration within the SAGA chromatin coactivator complex, and a striking similarity to DNA-repair factor DNA-PKcs.
    1. Cell Biology
    2. Genetics and Genomics

    Endoplasmic reticulum-associated SKN-1A/Nrf1 mediates a cytoplasmic unfolded protein response and promotes longevity

    Nicolas J Lehrbach, Gary Ruvkun
    SKN-1A/Nrf1 promotes healthy aging by activating protein degradation in response to accumulation of misfolded proteins.

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