4,054 results found
    1. Evolutionary Biology

    Rapid decline of bacterial drug-resistance in an antibiotic-free environment through phenotypic reversion

    Anett Dunai et al.
    Drug-resistance declines in the laboratory in an antibiotic stress-free environment, indicating that restricting antimicrobial usage in the clinics could be a useful policy.
    1. Developmental Biology

    Two-step regulation of trachealess ensures tight coupling of cell fate with morphogenesis in the Drosophila trachea

    Takefumi Kondo, Shigeo Hayashi
    The Drosophila tracheal fate is stabilized by the combination of transcriptional programs to control tissue architecture and tissue-level input sensitive to tubular geometry, ensuring the robust mechanism of organ determination.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Stochastic cell-cycle entry and cell-state-dependent fate outputs of injury-reactivated tectal radial glia in zebrafish

    Shuguang Yu, Jie He
    The analysis of injury-reactivated tectal radial glia in zebrafish reveals a stochastic cell-cycle entry and cell-state-dependent regulation of the balance between neurogenesis and gliogenesis.
    1. Structural Biology and Molecular Biophysics

    Structural and functional insights into the bona fide catalytic state of Streptococcus pyogenes Cas9 HNH nuclease domain

    Zhicheng Zuo et al.
    The catalytic activation of the Cas9 HNH domain involves a unique conformational change in the ββα-metal motif that is collectively driven by the interactions with the metal ions and DNA.
    1. Cell Biology

    Spatiotemporal control of mitotic exit during anaphase by an aurora B-Cdk1 crosstalk

    Olga Afonso et al.
    Quantitative live-cell microscopy and molecular perturbations in Drosophila and human cells reveal a crosstalk between molecular 'rulers' (Aurora B) and 'clocks' (Cdk1) that coordinates mitotic exit in space and time.
    1. Neuroscience

    Metacontrol of decision-making strategies in human aging

    Florian Bolenz et al.
    Older adults show reduced adaptation of decision-making strategies to dynamically changing situational demands.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Subtle selectivity in a pheromone sensor triumvirate desynchronizes competence and predation in a human gut commensal

    Johann Mignolet et al.
    A new cell–cell communication system in Streptococcus salivarius, a human gut commensal, discriminates between close signaling molecules to specifically produce bacteriocin-based antimicrobials and disconnects it from foreign DNA acquisition.
    1. Immunology and Inflammation

    B cell receptor and Toll-like receptor signaling coordinate to control distinct B-1 responses to both self and the microbiota

    Lieselotte SM Kreuk et al.
    Microbial-sensing TLRs drive responses to the microbiota, while nucleic-acid sensing TLRs control responses to endogenous ligands, revealing novel regulation of B-1a responses through integrated BCR/TLR mediated activation.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A conserved Mcm4 motif is required for Mcm2-7 double-hexamer formation and origin DNA unwinding

    Kanokwan Champasa et al.
    Analysis of an essential motif in Mcm4 provides insights into replicative helicase double-hexamer formation and the first step requiring this intermediate during replication initiation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A potent voltage-gated calcium channel inhibitor engineered from a nanobody targeted to auxiliary CaVβ subunits

    Travis J Morgenstern et al.
    A novel engineered protein that uncouples electrical signals from downstream biological responses in excitable cells provides a unique investigative tool with potential therapeutic applications.

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