55 results found
    1. Developmental Biology
    2. Neuroscience

    Neuroblast-specific open chromatin allows the temporal transcription factor, Hunchback, to bind neuroblast-specific loci

    Sonia Q Sen et al.
    Spatial factors generate neuroblast-specific open chromatin, thereby biasing the subsequent binding of transcription factors to produce neuroblast-specific neurons.
    1. Developmental Biology
    2. Neuroscience

    How prolonged expression of Hunchback, a temporal transcription factor, re-wires locomotor circuits

    Julia L Meng et al.
    In vivo stem cell reprogramming in the well-studied stem cell NB7-1 using the classic temporal transcription factor Hunchback increases motor neuron number and re-specifies dendritic morphology and neuromuscular synaptic partnerships.
    1. Physics of Living Systems

    A mechanism for hunchback promoters to readout morphogenetic positional information in less than a minute

    Jonathan Desponds et al.
    Maternal positional information in the fly embryo can be read rapidly in spite of the gene-expression bottleneck and general examples of regulatory architectures that combine speed and accuracy are provided.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Dissecting the sharp response of a canonical developmental enhancer reveals multiple sources of cooperativity

    Jeehae Park et al.
    The sharp expression pattern driven by a classic, simple animal enhancer is determined by multiple molecular mechanisms, not only cooperative binding of the activating transcription factor as was previously thought.
    1. Physics of Living Systems

    Quantitative dissection of transcription in development yields evidence for transcription-factor-driven chromatin accessibility

    Elizabeth Eck et al.
    Confronting different models of chromatin accessibility with temporally resolved transcription profiles favors a scenario where transcription factors actively, rather than passively, drive chromatin from the inaccessible to the accessible state.
    1. Computational and Systems Biology
    2. Developmental Biology

    The dynamic transmission of positional information in stau- mutants during Drosophila embryogenesis

    Zhe Yang et al.
    In stau-mutants, the Hunchback boundary shifts posteriorly by 10% EL but shows comparable variability to that of the wild type in short time windows in nuclear cycle 14.
    1. Structural Biology and Molecular Biophysics
    2. Developmental Biology

    Drosophila Nanos acts as a molecular clamp that modulates the RNA-binding and repression activities of Pumilio

    Chase A Weidmann et al.
    Crystal structures of Nanos bound to Pumilio and target RNAs demonstrate how Nanos forms a molecular clamp to alter Pumilio RNA regulation and specificity in embryonic development and germline maintenance.
    1. Computational and Systems Biology
    2. Developmental Biology

    A re-inducible gap gene cascade patterns the anterior–posterior axis of insects in a threshold-free fashion

    Alena Boos et al.
    The body axis of insects is divided into different fates using a self-regulatory and threshold-free mechanism.
    1. Developmental Biology

    Enhancer additivity and non-additivity are determined by enhancer strength in the Drosophila embryo

    Jacques P Bothma et al.
    Quantitative live imaging assays reveal that multiple enhancers often fail to work in an additive fashion in the patterning of the Drosophila embryo, and sometimes even interfere with one another.
    1. Developmental Biology

    A novel role for Ets4 in axis specification and cell migration in the spider Parasteatoda tepidariorum

    Matthias Pechmann et al.
    In the spider Parasteatoda tepidariorum the transcription factor Ets4 is needed for cumulus integrity, dorsoventral patterning and for the activation of hunchback and twist expression.

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