55 results found
    1. Developmental Biology
    2. Physics of Living Systems

    Cost-precision trade-off relation determines the optimal morphogen gradient for accurate biological pattern formation

    Yonghyun Song, Changbong Hyeon
    The morphogen profiles that pattern the fruit fly attain desired levels of spatial precision in a cost-effective manner.
    1. Developmental Biology
    2. Neuroscience

    Sustained expression of unc-4 homeobox gene and unc-37/Groucho in postmitotic neurons specifies the spatial organization of the cholinergic synapses in C. elegans

    Mizuki Kurashina et al.
    Genetic analyses using a simple nervous system of the nematode revealed the novel function of the cell fate-determining transcriptional repressor complex in the differentiated neurons to determine the precise synapse position.
    1. Neuroscience

    A locomotor neural circuit persists and functions similarly in larvae and adult Drosophila

    Kristen Lee, Chris Q Doe
    Descending interneurons maintain synaptic connectivity and behavioral function despite pruning during metamorphosis, showing that synaptic specificity is established twice at different life stages.
    1. Physics of Living Systems

    Live imaging and biophysical modeling support a button-based mechanism of somatic homolog pairing in Drosophila

    Myron Barber Child VI et al.
    Biophysical modeling and quantitative live-cell imaging converge to show that the century-old puzzle of somatic homolog pairing in Drosophila operates via a button model.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Allosteric conformational ensembles have unlimited capacity for integrating information

    John W Biddle et al.
    The effective higher-order binding cooperativities arising from an ensemble of dynamically interchanging conformations are identified and shown to fully describe integration of binding information at thermodynamic equilibrium.
    1. Developmental Biology
    2. Neuroscience

    A developmental framework linking neurogenesis and circuit formation in the Drosophila CNS

    Brandon Mark et al.
    Neurons are mapped for developmental features (lineage, hemilineage, temporal identity) and connectomic features (morphology, synapse localization and connectivity) to reveal correlations that can be tested experimentally.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    Kinetic sculpting of the seven stripes of the Drosophila even-skipped gene

    Augusto Berrocal et al.
    Live quantitative monitoring of transcriptional bursting reveals that enhancers responding to different regulators use the same kinetic strategy to produce a complex composite pattern of developmental expression.
    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. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Shadow enhancers can suppress input transcription factor noise through distinct regulatory logic

    Rachel Waymack et al.
    Proper development depends on establishing precise gene expression patterns in spite of the inherent noise in transcription, shadow enhancers buffer this noise by binding distinct input transcription factors.
    1. Developmental Biology

    Geometric models for robust encoding of dynamical information into embryonic patterns

    Laurent Jutras-Dubé et al.
    Propagation, speed and shapes of genetic waves of expression during development can be modeled by a simple interplay between two transcriptional modules (dynamic/static), which explains robustness and precision of patterning.

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