690 results found
    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, Juan J Montero ... Maria A Blasco
    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. Cell Biology
    2. Chromosomes and Gene Expression

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

    Rosa Maria Porreca, Emilia Herrera-Moyano ... Jean-Baptiste Vannier
    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.
    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, Natasha Lukoyanova ... Alan CM Cheung
    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. Immunology and Inflammation

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

    Koshika Yadava, Carlos Obed Medina ... Paul L Bollyky
    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. 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, Patrick Aderhold ... John A G Briggs
    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, Yaser Hashem ... Joachim Frank
    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

    The aspartyl protease DDI2 activates Nrf1 to compensate for proteasome dysfunction

    Shun Koizumi, Taro Irie ... Shigeo Murata
    Peptidase activity of DDI2 is required to activate Nrf1 in order to enable proteasome recovery in response to proteasome inhibition.
    1. Cell Biology

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

    Senthil K Radhakrishnan, Willem den Besten, Raymond J Deshaies
    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. Chromosomes and Gene Expression

    RNA Polymerase II transcription independent of TBP in murine embryonic stem cells

    James ZJ Kwan, Thomas F Nguyen ... Sheila S Teves
    TATA-box binding protein is not required for RNA Polymerase II transcription in mouse embryonic stem cells.
    1. Cell Biology

    Schizosaccharomyces pombe Rtf2 is important for replication fork barrier activity of RTS1 via splicing of Rtf1

    Alice M Budden, Murat Eravci ... Antony M Carr
    Rtf2 is shown to associate with multiple splicing factors and influence splicing of a subset of introns explaining why previous work erroneously assigned it as a replication restart factor in fission yeast.

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