698 results found
    1. Evolutionary Biology

    Homo naledi and Pleistocene hominin evolution in subequatorial Africa

    Lee R Berger et al.
    A late Middle Pleistocene age for Homo naledi demonstrates a diversity of hominin species in Africa at this critical time in the archaeological record.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Autocatalytic microtubule nucleation determines the size and mass of Xenopus laevis egg extract spindles

    Franziska Decker et al.
    Quantitative microscopy and theory show that the size of Xenopus laevis egg extract spindles is controlled by a spatially-regulated autocatalytic growth mechanism driven by microtubule-stimulated microtubule nucleation.
    1. Microbiology and infectious disease

    Asymmetric division triggers cell-specific gene expression through coupled capture and stabilization of a phosphatase

    Niels Bradshaw, Richard Losick
    Asymmetric cell division is linked to cell-specific transcription by handoff of a key developmental regulator from the cytokinetic machinery to the adjacent cell pole where it oligomerizes to become stabilized and activated.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    An effector of the Irish potato famine pathogen antagonizes a host autophagy cargo receptor

    Yasin F Dagdas et al.
    A plant pathogen effector evolved a short linear motif to subvert autophagic defenses by antagonising a host cargo receptor.
    1. Developmental Biology

    DNA methylation and gene expression changes derived from assisted reproductive technologies can be decreased by reproductive fluids

    Sebastian Canovas et al.
    Reproductive fluids help the correct establishment of some epigenetic marks and gene expression in preimplantation pig embryos.
    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. Physics of Living Systems
    2. Cell Biology

    Cortical flow aligns actin filaments to form a furrow

    Anne-Cecile Reymann et al.
    Compressing the actomyosin network by cortical flow causes filaments to align and form a constricting ring.
    1. Structural Biology and Molecular Biophysics

    Helix breaking transition in the S4 of HCN channel is critical for hyperpolarization-dependent gating

    Marina A Kasimova et al.
    The gating polarity of a voltage-gated ion channel is primarily determined by turn propensity of residues at a critical position in the middle of the S4 voltage-sensing helix.
    1. Evolutionary Biology

    Retinal oxygen supply shaped the functional evolution of the vertebrate eye

    Christian Damsgaard et al.
    Multiple respiratory and vascular mechanisms have recurrently evolved across the vertebrates to alleviate the oxygen diffusion limitations inherent to the morphology of the retina.
    1. Cancer Biology

    Lactate-mediated epigenetic reprogramming regulates formation of human pancreatic cancer-associated fibroblasts

    Tushar D Bhagat et al.
    Lactate in pancreatic cancer micro-environment can lead to TET enzyme activation and loss of DNA methylation seen in cancer associated fibroblasts.

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