486 results found
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Convergence of topological domain boundaries, insulators, and polytene interbands revealed by high-resolution mapping of chromatin contacts in the early Drosophila melanogaster embryo

    Michael R Stadler et al.
    Fruit fly chromosomes are divided into discrete structural domains by regions of decompacted chromatin, suggesting a novel model for the formation of a known class of genetic elements.
    1. Chromosomes and Gene Expression

    Temporal dynamics and developmental memory of 3D chromatin architecture at Hox gene loci

    Daan Noordermeer et al.
    Hox genes are activated sequentially and, at the same time, undergo a transition from an inactive to an active chromatin compartment, most likely to prevent posterior genes being activated too early.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Regulating G protein-coupled receptors by topological inversion

    Bray Denard et al.
    Multiple biochemical assays show that the topology of CCR5 and possibly other GPCRs may be inverted by ceramide or other sphingolipids through the process of regulated alternative translocation.
    1. Computational and Systems Biology
    2. Plant Biology

    Topological analysis of multicellular complexity in the plant hypocotyl

    Matthew DB Jackson et al.
    The use of network science to quantify the properties of global cellular organization in the plant hypocotyl identifies higher-order properties and plasticity in epidermal cell patterning.
    1. Neuroscience

    The severity of microstrokes depends on local vascular topology and baseline perfusion

    Franca Schmid et al.
    The number of inflows and outflows at the occluded capillary governs the local flow reduction, and the different topological configurations are probably designed for distinct functional tasks.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    A Brownian ratchet model for DNA loop extrusion by the cohesin complex

    Torahiko L Higashi et al.
    A structure-based model of the chromosomal cohesin complex, accompanied by molecular-mechanistic simulations, explains cohesin's key role in topologically entrapping DNA, as well as its ability to alternatively extrude DNA loops.
    1. Physics of Living Systems

    Epithelial colonies in vitro elongate through collective effects

    Jordi Comelles et al.
    Spontaneous elongation of epithelial colonies is related to the orientation of the mean nematic cell elongation field, as shown and tested with experiments and theory.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    CTCF and cohesin regulate chromatin loop stability with distinct dynamics

    Anders S Hansen et al.
    Single-molecule imaging of CTCF and cohesin in live cells suggests that chromatin loops are dynamic structures that frequently form and fall apart.
    1. Microbiology and Infectious Disease

    Parvovirus minute virus of mice interacts with sites of cellular DNA damage to establish and amplify its lytic infection

    Kinjal Majumder et al.
    Development of a generally adaptable conformational capture assay for use in-trans identifies the specific direct interaction sites between the parvovirus minute virus of mice and the cellular genome during infection as sites of cellular DNA damage.
    1. Developmental Biology

    Ordered patterning of the sensory system is susceptible to stochastic features of gene expression

    Ritika Giri et al.
    How gene expression noise is regulated is critical for cell fate and tissue patterning.

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