1,597 results found
    1. Evolutionary Biology

    The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa

    Paul HGM Dirks, Eric M Roberts ... Lee R Berger
    Independent dating techniques have established that the H. naledi fossils are between 236 and 335 thousand years old, indicating that small-brained hominins with relatively primitive body shapes co-existed with our early ancestors in Africa.
    1. Neuroscience

    A reservoir of timescales emerges in recurrent circuits with heterogeneous neural assemblies

    Merav Stern, Nicolae Istrate, Luca Mazzucato
    The large range of timescales empirically observed in neural circuits can be naturally explained when neural assemblies of heterogeneous size are recurrently coupled, empowering the neural circuits to efficiently process complex time-varying input signals.
    1. Physics of Living Systems

    Negative reciprocity, not ordered assembly, underlies the interaction of Sox2 and Oct4 on DNA

    John W Biddle, Maximilian Nguyen, Jeremy Gunawardena
    Rigorous reanalysis of single-molecule data yields evidence for energy expenditure in the interaction of transcription factors on DNA.
    1. Structural Biology and Molecular Biophysics

    Targeted anticancer pre-vinylsulfone covalent inhibitors of carbonic anhydrase IX

    Aivaras Vaškevičius, Denis Baronas ... Daumantas Matulis
    A series of compounds were synthesized and demonstrated to form a specific covalent bond with His64 of CAIX, an anticancer target, a strategy applicable to any drug design project.
    1. Developmental Biology
    2. Neuroscience

    Synapse weakening-induced caspase-3 activity confers specificity to microglia-mediated synapse elimination

    Zhou Yu, Andrian Gutu ... Erin K O’Shea
    Not revised
    Reviewed Preprint v1
    • Important
    • Incomplete
    1. Neuroscience

    The nematode worm C. elegans chooses between bacterial foods as if maximizing economic utility

    Abraham Katzen, Hui-Kuan Chung ... Shawn R Lockery
    A worm with a nervous system of only 302 neurons satisfies the necessary and sufficient conditions for value-based decision making.
    1. Neuroscience

    The effects of chloride dynamics on substantia nigra pars reticulata responses to pallidal and striatal inputs

    Ryan S Phillips, Ian Rosner ... Jonathan E Rubin
    The effects of chloride homeostasis can explain diverse responses of basal ganglia output neurons to putatively inhibitory inputs and may tune these neurons' synchrony, oscillations and behavior in decision-making scenarios.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    A widely distributed metalloenzyme class enables gut microbial metabolism of host- and diet-derived catechols

    Vayu Maini Rekdal, Paola Nol Bernadino ... Emily P Balskus
    A previously unrecognized group of metalloenzymes enables human gut microbes to metabolize dietary molecules and neurotransmitters and likely mediates interactions and metabolism among environmental microorganisms.
    1. Neuroscience

    A connectome of the Drosophila central complex reveals network motifs suitable for flexible navigation and context-dependent action selection

    Brad K Hulse, Hannah Haberkern ... Vivek Jayaraman
    An analysis of the first complete synaptic resolution connectome of Drosophila's navigation circuit uncovers neural network motifs supporting broadly relevant sensorimotor computations.
    1. Evolutionary Biology

    Tradeoff breaking as a model of evolutionary transitions in individuality and limits of the fitness-decoupling metaphor

    Pierrick Bourrat, Guilhem Doulcier ... Katrin Hammerschmidt
    A new model describes evolutionary transitions in individuality in terms of tradeoff and tradeoff-breaking events as opposed to changes in the nature of fitness.

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