247 results found
    1. Ecology
    2. Evolutionary Biology

    Reduced metabolism supports hypoxic flight in the high-flying bar-headed goose (Anser indicus)

    Jessica U Meir et al.
    Measurements of bar-headed geese flying in a wind tunnel in hypoxia reveal that these birds sustain aerobic flight at high altitude via a reduction in metabolism.
    1. Ecology
    2. Evolutionary Biology

    Physiology: The highs and lows of bird flight

    Jon Harrison
    Bar-headed geese lower their flight metabolic rates to fly in low-oxygen conditions.
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    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis of transcription arrest by coliphage HK022 Nun in an Escherichia coli RNA polymerase elongation complex

    Jin Young Kang et al.
    Cryo-electron microscopy structures show how coliphage HK022 Nun blocks Escherichia coli RNA polymerase translocation by mediating multiple interactions between the RNA polymerase and nucleic acids.
    1. Neuroscience

    Stimulus-dependent recruitment of lateral inhibition underlies retinal direction selectivity

    Qiang Chen et al.
    Synapse-specific genetic manipulations show that distinct GABAergic inputs are differentially recruited to encode motion direction in the retina in a stimulus-dependent manner.
    1. Cell Biology
    2. Developmental Biology

    Proliferation-independent regulation of organ size by Fgf/Notch signaling

    Agnė Kozlovskaja-Gumbrienė et al.
    Cell adhesion regulates organ size in the zebrafish lateral line system.
    1. Neuroscience

    Imaging neuropeptide release at synapses with a genetically engineered reporter

    Keke Ding et al.
    A series of genetically-encoded fluorescent reporters that allow imaging of neuropeptide release in vivo, with sub-second temporal and nerve terminal-level spatial resolution are developed.
    1. Neuroscience

    Neural activity in a hippocampus-like region of the teleost pallium is associated with active sensing and navigation

    Haleh Fotowat et al.
    Sparse firing in a hippocampus-like structure of the teleost telencephalon is linked to spatial navigation and active sensing.
    1. Neuroscience

    Bed nucleus of the stria terminalis regulates fear to unpredictable threat signals

    Travis D Goode et al.
    The bed nucleus of the stria terminalis (BNST) is required for the expression of defensive behavior to uncertain threats, a function that is central to pathological anxiety.
    1. Neuroscience

    Retinal direction selectivity in the absence of asymmetric starburst amacrine cell responses

    Laura Hanson et al.
    Experimental and computational models reveal how parallel 'core' mechanisms shape direction selectivity at the dendrites of starburst amacrine cells and ganglion cells in the mouse retina.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    Dynamic multifactor hubs interact transiently with sites of active transcription in Drosophila embryos

    Mustafa Mir et al.
    The probability of transcription factors binding to their target sites is choreographed through the formation of dynamic multi-protein hubs that transiently interact with actively transcribing genes.

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