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    1. Developmental Biology
    2. Evolutionary Biology

    Domestic chickens activate a piRNA defense against avian leukosis virus

    Yu Huining Sun et al.
    To protect the germ line genome, chickens acquire new small RNA-based immune defense in response to recently endogenized retroviruses by turning a truncated provirus into a weapon.
    1. Neuroscience

    Motor control of Drosophila feeding behavior

    Olivia Schwarz et al.
    The neuroanatomical and functional analysis of genetically-identified motoneurons controlling all major steps of Drosophila proboscis extension provides new insights into the architecture of a motor circuitry controlling a reaching-like behavior.
    1. Cell Biology
    2. Immunology and Inflammation

    Non-canonical antagonism of PI3K by the kinase Itpkb delays thymocyte β-selection and renders it Notch-dependent

    Luise Westernberg et al.
    Antagonistic signaling by the kinases PI3K and Itpkb limits the kinetics and enforces the Notch-dependence of beta-selection – the most important cell-fate determining process in alpha beta T cell development.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Lysosomal membrane glycoproteins bind cholesterol and contribute to lysosomal cholesterol export

    Jian Li, Suzanne R Pfeffer
    LAMP proteins, the major glycoproteins of the lysosome membrane, bind cholesterol directly and specifically, and interact with NPC1 and NPC2 proteins as part of the lysosomal cholesterol export process.
    1. Computational and Systems Biology
    2. Stem Cells and Regenerative Medicine

    Reconstructing the in vivo dynamics of hematopoietic stem cells from telomere length distributions

    Benjamin Werner et al.
    Telomere length distributions can be used to infer important properties of stem cell proliferation.
    1. Physics of Living Systems

    A physical model describing the interaction of nuclear transport receptors with FG nucleoporin domain assemblies

    Raphael Zahn et al.
    A homopolymer-sphere model is shown to accurately reproduce the interactions that underpin selective gating of macromolecular transport into and out of the cell nucleus.
    1. Computational and Systems Biology

    Quantitative time-resolved analysis reveals intricate, differential regulation of standard- and immuno-proteasomes

    Juliane Liepe et al.
    Experimental and computational analyses reveal how proteasomal hydrolysis is regulated and show that peptide transport is the rate-limiting step and the main differentiating factor between human standard- and immuno-proteasomes.
    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. Cell Biology
    2. Plant Biology

    SnRK1-triggered switch of bZIP63 dimerization mediates the low-energy response in plants

    Andrea Mair et al.
    The transcription factor bZIP63 is a key regulator of the starvation response in the model plant Arabidopsis thaliana and is directly targeted by the kinase SnRK1.
    1. Physics of Living Systems
    2. Cell Biology

    Mechanical design principles of a mitotic spindle

    Jonathan J Ward et al.
    Precise control of microtubule architecture greatly increases the force that the spindle can exert on chromosomes.