484 results found
    1. Chromosomes and Gene Expression
    2. Human Biology and Medicine

    Dynamic repression by BCL6 controls the genome-wide liver response to fasting and steatosis

    Meredith A Sommars et al.
    B cell lymphoma 6 (BCL6) represses fasting gene expression by opposing peroxisome proliferator-activated receptor alpha (PPARa) activity at enhancers, and its ablation protects against steatosis by enhancing fatty acid catabolism.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Structure and mechanism of a Hypr GGDEF enzyme that activates cGAMP signaling to control extracellular metal respiration

    Zachary F Hallberg et al.
    A newfound signaling enzyme that diverged from a protein family ubiquitous in bacteria provides mechanistic insights into how new signaling activity emerges to control distinct cellular function and physiology.
    1. Structural Biology and Molecular Biophysics

    Importin-9 wraps around the H2A-H2B core to act as nuclear importer and histone chaperone

    Abhilash Padavannil et al.
    In an unusual complex that is not dissociated by RanGTP alone, Importin-9 sequesters the H2A-H2B core from promiscuous interactions.
    1. Developmental Biology

    Distinct mesoderm migration phenotypes in extra-embryonic and embryonic regions of the early mouse embryo

    Bechara Saykali et al.
    At gastrulation, mesoderm arises as a migratory germ layer that will participate to both foetal and placental development through region-dependant adaptation of cytoskeleton composition, cell shape and migration mode.
    1. Plant Biology

    A regulatory module controlling stress-induced cell cycle arrest in Arabidopsis

    Naoki Takahashi et al.
    Arabidopsis deploys the core signalling module that perceives distinct stress signals, such as DNA damage and heat stresses, and represses G2/M-specific genes, thereby causing cell cycle arrest.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Intramolecular domain dynamics regulate synaptic MAGUK protein interactions

    Nils Rademacher et al.
    Binding of ligands to PSD-95 PDZ domains induces a conformational change within the C-terminal domain module that enables differential binding to synaptic interactors.
    1. Cell Biology
    2. Developmental Biology

    Patronin governs minus-end-out orientation of dendritic microtubules to promote dendrite pruning in Drosophila

    Yan Wang et al.
    A minus-end-binding stabilizes minus-end-out microtubules in dendrites, which are required for dendrite-specific pruning during neuronal remodelling.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    The cryo-EM structure of a 12-subunit variant of RNA polymerase I reveals dissociation of the A49-A34.5 heterodimer and rearrangement of subunit A12.2

    Lucas Tafur et al.
    Cryo-EM structures of RNA polymerase I reveal considerable 'transformers-like' rearrangements where one subcomplex dissociates and is replaced by one domain of another subunit, possibly as an additional layer of transcriptional control.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    ParB dynamics and the critical role of the CTD in DNA condensation unveiled by combined force-fluorescence measurements

    Julene Madariaga-Marcos et al.
    A single-molecule biophysical approach reveals that the C-terminal domain of ParB blocks ParB network formation by heterodimerization with the full-length protein, which remains bound to the DNA.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Membrane bridging by Munc13-1 is crucial for neurotransmitter release

    Bradley Quade et al.
    Cryo-electron tomography, reconstitution, and electrophysiological data show that a fundamental function of Munc13-1 is to bridge synaptic vesicles to the presynaptic plasma membrane.

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