3,493 results found
    1. Chromosomes and Gene Expression

    Crl activates transcription by stabilizing active conformation of the master stress transcription initiation factor

    Juncao Xu et al.
    The cryo-EM structure of Escherichia coli Crl–TAC reveals the mechanism of DNA-contact-independent transcription activation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Functional instability allows access to DNA in longer transcription Activator-Like effector (TALE) arrays

    Kathryn Geiger-Schuller et al.
    Single molecule DNA-binding trajectories and deterministic modeling analyses demonstrate a functional role for high energy partly folded states in Transcription Activator-Like Effectors that could improve future TALEN design.
    1. Developmental Biology

    The transcription factor Pou3f1 promotes neural fate commitment via activation of neural lineage genes and inhibition of external signaling pathways

    Qingqing Zhu et al.
    The transcription factor Pou3f1 triggers embryonic stem cells to become neuronal progenitor cells in two ways: by activating the expression of pro-neuronal genes and by blocking external inhibitory signaling cascades.
    1. Chromosomes and Gene Expression

    Direct observation of frequency modulated transcription in single cells using light activation

    Daniel R Larson et al.
    Steroid hormone receptors control the expression of their target genes through a digital on-off switch in individual cells, which leads to an analogue dose-response relationship at the level of the whole organism.
    1. Stem Cells and Regenerative Medicine

    Sequential activation of transcriptional repressors promotes progenitor commitment by silencing stem cell identity genes

    Noemi Rives-Quinto et al.
    Silencing of stem cell identity genes during progenitor commitment ensures that intermediate progenitors robustly commit to generate differentiated cell types rather than abnormal stem-cell-like cells during indirect neurogenesis.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Evolution of reduced co-activator dependence led to target expansion of a starvation response pathway

    Bin Z He et al.
    The phosphate starvation response network in a commensal yeast evolved to expand its downstream targets via changes in the main transcription factor's dependence on its co-activator, potentially altering the physiological response.
    1. Neuroscience
    2. Stem Cells and Regenerative Medicine

    Activation of a neural stem cell transcriptional program in parenchymal astrocytes

    Jens P Magnusson et al.
    Parenchymal astrocytes are quiescent neural stem cells whose neurogenic potential can be unleashed by targeted manipulations guided by single-cell RNA sequencing data.
    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. Developmental Biology

    Negative feedback couples Hippo pathway activation with Kibra degradation independent of Yorkie-mediated transcription

    Sherzod A Tokamov et al.
    Kibra-mediated Hippo complex assembly promotes Kibra degradation in a negative feedback loop that is regulated by mechanical tension.
    1. Biochemistry and Chemical Biology

    The HIV-1 Tat protein recruits a ubiquitin ligase to reorganize the 7SK snRNP for transcriptional activation

    Tyler B Faust et al.
    The HIV-1 Tat protein hijacks host non-degradative ubiquitination to trigger the nuclear import of the transcription elongation factor, P-TEFb.

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