503 results found
    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. 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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of ribosome rescue by ArfA and RF2

    Gabriel Demo et al.
    Cryo-EM structures reveal the structural dynamics of ArfA*RF2-mediated rescue of stalled ribosomes.
    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. Neuroscience

    Arf6 regulates the cycling and the readily releasable pool of synaptic vesicles at hippocampal synapse

    Erica Tagliatti et al.
    The small GTPase Arf6 plays a role in setting the size of the readily releasable pool of synaptic vesicles and in the definition of the recycling route for endocytosed vesicles.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Constitutive auxin response in Physcomitrella reveals complex interactions between Aux/IAA and ARF proteins

    Meirav Lavy et al.
    The auxin-sensitive Aux/IAA transcriptional repressors regulate approximately 35% of the annotated genes in Physcomitrella patens and exhibit complex interactions with both the activating and repressing ARF transcription factors.
    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. 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. Chromosomes and Gene Expression

    A non-canonical role for the EDC4 decapping factor in regulating MARF1-mediated mRNA decay

    William R Brothers et al.
    Crosslink immunopreciptiation (iCLIP) studies reveal important mechanistic insights into how MARF1 post-transcriptionally regulates targeted mRNAs and uncover a novel mode by which EDC4 regulates mRNA metabolism.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    TRF1 averts chromatin remodelling, recombination and replication dependent-break induced replication at mouse telomeres

    Rosa Maria Porreca et al.
    TRF1 suppresses replication fork stalling, which triggers break induced replication at telomeres associated with DNA damage response, alteration in the telomere chromatin environment, and re-localisation of telomeres to PML bodies.

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