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    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Co-option of an endogenous retrovirus envelope for host defense in hominid ancestors

    Daniel Blanco-Melo et al.
    The reconstitution of a functional envelope protein from an extinct hominid retrovirus reveals its receptor and an ancient host defense that may have led to the extinction of the virus.
    1. Computational and Systems Biology
    2. Developmental Biology

    A balance of positive and negative regulators determines the pace of the segmentation clock

    Guy Wiedermann et al.
    Computational modelling together with experimental manipulation indicate that the stability and turnover of activated Notch is inextricably linked to the regulation of the pace of segmentation clock gene expression in the presomitic mesoderm.
    1. Neuroscience

    A hierarchy of timescales explains distinct effects of local inhibition of primary visual cortex and frontal eye fields

    Luca Cocchi et al.
    The selective effect of local inhibition on diffuse patterns of brain connectivity can be accounted for by an intrinsic hierarchical ordering of cortical timescales.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Operon mRNAs are organized into ORF-centric structures that predict translation efficiency

    David H Burkhardt et al.
    Operonic mRNAs in bacteria are comprised of ORF (open reading frame)-wide units of secondary structure, which are intrinsically distinct between adjacent ORFs and encode a rough blueprint for ORF-specific translation efficiency.
    1. Neuroscience

    Functional integration of a serotonergic neuron in the Drosophila antennal lobe

    Xiaonan Zhang, Quentin Gaudry
    Serotonergic cells innervating the Drosophila antennal lobe are inhibited by odors and modulate olfactory responses in conjunction with the entire serotonergic network.
    1. Neuroscience

    Similar synapse elimination motifs at successive relays in the same efferent pathway during development in mice

    Shu-Hsien Sheu et al.
    A similar pattern of developmental synaptic refinement leads two consecutive synaptic relays to have the same organization suggesting that some general principle of neural organization is at play.
    1. Neuroscience

    Spatial cell firing during virtual navigation of open arenas by head-restrained mice

    Guifen Chen et al.
    A mouse virtual reality system is presented which allows normal spatial behavior and place, grid and head-direction cell firing patterns in 2-D arenas, and is compatible with electrophysiology and multi-photon imaging.
    1. Neuroscience

    Mild myelin disruption elicits early alteration in behavior and proliferation in the subventricular zone

    Elizabeth A Gould et al.
    Mild myelin disruption leads to early axonal pathology, a novel pathological response in neural stem cells, regionally increased oligodendrocytes and altered behavior.
    1. Cell Biology

    Recruitment dynamics of ESCRT-III and Vps4 to endosomes and implications for reverse membrane budding

    Manuel Alonso Y Adell et al.
    Quantitative 3D lattice light sheet microscopy of unperturbed cells combined with electron tomography and acute loss of function experiments reveals how dynamic ESCRT-III/Vps4 assemblies succeed in reverse membrane budding on endosomes.
    1. Structural Biology and Molecular Biophysics

    Conserved mechanisms of microtubule-stimulated ADP release, ATP binding, and force generation in transport kinesins

    Joseph Atherton et al.
    Cryo-electron microscopy reconstructions of two microtubule-bound transport kinesins at 7 Å resolution reveal how microtubule track binding stimulates ADP release, primes the active site for ATP binding and enables force generation.