February 2013

Research articles

    1. Neuroscience

    Convergence of pontine and proprioceptive streams onto multimodal cerebellar granule cells

    Cheng-Chiu Huang et al.
    Individual granule cells within the cerebellum-the region of the brain that coordinates movement and supports the learning of new motor skills-receive both sensory and motor input streams: an arrangement that may help the brain to use feedback to fine-tune movement.
    1. Genes and Chromosomes
    2. Genomics and Evolutionary Biology

    Epigenetic conservation at gene regulatory elements revealed by non-methylated DNA profiling in seven vertebrates

    Hannah K Long et al.
    Islands of non-methylated DNA are shown to perform a similar epigenetic role in many different vertebrate species.
    1. Biophysics and Structural Biology
    2. Microbiology and Infectious Disease

    Influenza-virus membrane fusion by cooperative fold-back of stochastically induced hemagglutinin intermediates

    Tijana Ivanovic et al.
    Long-lived intermediate states formed by glycoprotein catalysts are an essential part of the process used by influenza virus particles to infect cells.
    1. Cell Biology
    2. Developmental Biology and Stem Cells

    Mitotic spindle scaling during Xenopus development by kif2a and importin α

    Jeremy D Wilbur, Rebecca Heald
    An interaction between two proteins enables the spindle—the structure that segregates chromosome pairs during mitosis—to change size as cells divide.
    1. Cell Biology
    2. Immunology

    UNC93B1 mediates differential trafficking of endosomal TLRs

    Bettina L Lee et al.
    A transmembrane protein uses distinct mechanisms to regulate the movement of specific toll-like receptors-key immune system components involved in detecting pathogens-to their final locations inside cells.
    1. Biophysics and Structural Biology

    Ribosome structures to near-atomic resolution from thirty thousand cryo-EM particles

    Xiao-chen Bai et al.
    A combination of direct-electron detectors and statistical movie processing allows ribosome cryo-EM structures to be determined to resolutions that were previously only attainable by X-ray crystallography.
    1. Human Biology and Medicine
    2. Immunology

    Dendritic cells loaded with FK506 kill T cells in an antigen-specific manner and prevent autoimmunity in vivo

    Dana E Orange et al.
    By using immune cells called dendritic cells to deliver drugs, it is possible to target and kill specific members of another class of immune cell, known as T cells, and to prevent these cells from attacking the body's own tissues in cases of autoimmune disease.
    1. Neuroscience

    Recognition of familiar food activates feeding via an endocrine serotonin signal in Caenorhabditis elegans

    Bo-mi Song et al.
    The nematode worm C. elegans consumes familiar bacterial species more rapidly than it does novel ones, and this preference for familiarity is mediated by a pair of serotonergic neurons.
    1. Neuroscience

    Hierarchical organization of context in the hippocampal episodic code

    Susumu Takahashi
    Neurons in the hippocampus modulate the rates at which they fire, and the locations in which they fire, so as to encode the information that is central to forming memories about personal experiences.
    1. Cell Biology

    Time line of redox events in aging postmitotic cells

    Nicolas Brandes et al.
    A sudden fall in the levels of the coenzyme NADPH within cells could have a central role in the process of aging.