3,920 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Immune genes are hotspots of shared positive selection across birds and mammals

    Allison J Shultz, Timothy B Sackton
    Pathogens, particularly viruses, target the same genes over deep evolutionary time, resulting in shared signatures of positive selection and transcriptional responses at the same genes.
    1. Neuroscience

    Comparisons between the ON- and OFF-edge motion pathways in the Drosophila brain

    Kazunori Shinomiya et al.
    A complete connectome of the ON and OFF motion pathways of the Drosophila optic lobe is acquired using three-dimensional EM methods, and the similarities and differences of the two pathways are uncovered.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Synergy between RecBCD subunits is essential for efficient DNA unwinding

    Rani Zananiri et al.
    A new optical tweezers assay sheds light on the mechanism of cooperation and force generation by the subunits of RecBCD, critical for the repair of double strand breaks in bacteria.
    1. Neuroscience

    High-throughput synapse-resolving two-photon fluorescence microendoscopy for deep-brain volumetric imaging in vivo

    Guanghan Meng et al.
    Improved two-photon fluorescence microendoscopy enables volumetric imaging of synapses and neurons in deep brain structures in vivo.
    1. Immunology and Inflammation

    HDAC3 restrains CD8-lineage genes to maintain a bi-potential state in CD4+CD8+ thymocytes for CD4-lineage commitment

    Rachael Laura Philips et al.
    CD4 lineage commitment requires HDAC3 to prevent premature upregulation of CD8 lineage genes during T cell development.
    1. Neuroscience

    Cellular cartography of the organ of Corti based on optical tissue clearing and machine learning

    Shinji Urata et al.
    A method of generating comprehensive maps of cochlear cells was created and enabled researchers to study characteristics of cellular damage in aged and noise-exposed inner ear.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The elemental mechanism of transcriptional pausing

    Jason Saba et al.
    Biochemical analyses of transcription complexes, including kinetic studies and probes of translocational and conformational states, establish the elemental mechanism of pausing, which underlies regulation of gene expression in all organisms.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Symbiont location, host fitness, and possible coadaptation in a symbiosis between social amoebae and bacteria

    Longfei Shu et al.
    Morphological and fitness defects imposed on amoebae hosts by Burkholderia symbionts demonstrates symbiont species-specific effects and provides evidence of host adaptation to naturally acquired symbionts.
    1. Cell Biology

    The unfolded protein response and endoplasmic reticulum protein targeting machineries converge on the stress sensor IRE1

    Diego Acosta-Alvear et al.
    The coordination of protein targeting to the endoplasmic reticulum and the unfolded protein response through the stress sensor IRE1 ensures quality control of the secreted and transmembrane proteomes.
    1. Neuroscience

    Decreased brain connectivity in smoking contrasts with increased connectivity in drinking

    Wei Cheng et al.
    The findings have a major impact in understanding the different reward systems involved in two types of addictive behavior, and these advances have implications for prevention and treatment.

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