353 results found
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    3D in situ imaging of the female reproductive tract reveals molecular signatures of fertilizing spermatozoa in mice

    Lukas Ded et al.
    Fertilizing mouse spermatozoa, characterized by intact CatSper channels, lack of protein tyrosine phosphorylation, and reacted acrosomes, in the female reproductive tract provide molecular insight into sperm selection for successful fertilization.
    1. Genetics and Genomics
    2. Neuroscience

    High neural activity accelerates the decline of cognitive plasticity with age in Caenorhabditis elegans

    Qiaochu Li et al.
    Chronic excitation of the Caenorhabditis elegans oxygen-sensing neurons alters calcium homeostasis to accelerate the decline of neural plasticity with age.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Repression of interrupted and intact rDNA by the SUMO pathway in Drosophila melanogaster

    Yicheng Luo et al.
    SUMO-dependent pathway is responsible for selective repression of damaged rDNA and silencing of intact surplus units revealing an epigenetic mechanism that controls the differential expression of identical sequences in the same cell.
    1. Microbiology and Infectious Disease

    The alternative sigma factor σX mediates competence shut-off at the cell pole in Streptococcus pneumoniae

    Calum HG Johnston et al.
    Tracking fluorescent fusion proteins in competent pneumococcal cells reveals a polar hub for competence regulation, with the alternative sigma factor σX relocalizing DprA to this hub to mediate competence shut-off.
    1. Neuroscience

    Belief updating in bipolar disorder predicts time of recurrence

    Paolo Ossola et al.
    A reduced tendency to update beliefs in response to positive relative to negative information predict sooner relapse in euthymic bipolar patients.
    1. Cell Biology

    Functional exploration of heterotrimeric kinesin-II in IFT and ciliary length control in Chlamydomonas

    Shufen Li et al.
    Experimental and modelling analyses suggest a non-linear scaling relationship between IFT velocity and ciliary length that can be accounted for by limitation of the motors.
    1. Neuroscience

    Feeding state functionally reconfigures a sensory circuit to drive thermosensory behavioral plasticity

    Asuka Takeishi et al.
    Starvation modulates thermotaxis behaviors in C. elegans via functional reconfiguration of a sensory network by gut-brain signaling.
    1. Neuroscience

    Dopamine promotes instrumental motivation, but reduces reward-related vigour

    John P Grogan et al.
    Dopaminergic medication dissociates contingent motivation from reward expectation effects on invigoration of movements in PD patients, confirming they are separate processes with different dopaminergic functions.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    NAIP–NLRC4-deficient mice are susceptible to shigellosis

    Patrick S Mitchell et al.
    The NAIP-NLRC4 inflammasome in intestinal epithelial cells protects mice from oral route Shigella infection.

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