26 results found
    1. Developmental Biology

    Neuronal sources of hedgehog modulate neurogenesis in the adult planarian brain

    Ko W Currie et al.
    Planarian brain neurons modulate their turnover by signaling to nearby stem cells.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova et al.
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    1. Cell Biology
    2. Developmental Biology

    Genetic screen in Drosophila muscle identifies autophagy-mediated T-tubule remodeling and a Rab2 role in autophagy

    Naonobu Fujita et al.
    Analyses of a developmentally regulated Drosophila myofiber remodeling program provide insight into induced autophagy required for T-tubule membrane reorganization, and uncover a conserved Rab2 role in autophagosome-lysosome fusion.
    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.
    1. Cell Biology
    2. Neuroscience

    Transverse tubule remodeling enhances Orai1-dependent Ca2+ entry in skeletal muscle

    Antonio Michelucci et al.
    Structural and functional analyses show that transverse tubule association with stacks of sarcoplasmic reticulum enhances Orai1-dependent Ca2+ entry to replenish Ca2+ stores, maintain Ca2+ release, and maximize force during exercise.
    1. Stem Cells and Regenerative Medicine

    Embryonic origin of adult stem cells required for tissue homeostasis and regeneration

    Erin L Davies et al.
    Anarchic, cycling piwi-1+ embryonic cells gives rise to neoblasts, pluripotent stemcells required for development of all organ systems during S. mediterranea embryogenesis, as well as the maintenance andregeneration of tissues during adulthood.
    1. Neuroscience

    A resource for the Drosophila antennal lobe provided by the connectome of glomerulus VA1v

    Jane Anne Horne et al.
    FIB-SEM is used to identify comprehensively and reconstruct 192 neurons and their complete connectome for glomerulus VA1v of the Drosophila antennal lobe, in particular to reconstruct its local interneurons.
    1. Cell Biology
    2. Developmental Biology

    Local mechanical forces promote polarized junctional assembly and axis elongation in Drosophila

    Jessica C Yu, Rodrigo Fernandez-Gonzalez
    Polarized assembly of cell-cell junctions drives Drosophila axis elongation.
    1. Genetics and Genomics
    2. Neuroscience

    Co-expression of xenopsin and rhabdomeric opsin in photoreceptors bearing microvilli and cilia

    Oliver Vöcking et al.
    The recently characterized opsin group of xenopsins is likely a major player in animal eye evolution and may have been present in an ancient, highly plastic eye photoreceptor cell type.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Prediction of enzymatic pathways by integrative pathway mapping

    Sara Calhoun et al.
    A computational method identifies the functions of orphan enzymes by organizing them into metabolic pathways; the prediction of a new l-gulonate catabolic pathway is experimentally tested and confirmed.

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