1,329 results found
    1. Cell Biology

    Nicotinamide adenine dinucleotide is transported into mammalian mitochondria

    Antonio Davila et al.
    Stable isotope labeling reveals that NAD crosses the inner membrane of mammalian mitochondria via an unknown transporter.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Introgression of regulatory alleles and a missense coding mutation drive plumage pattern diversity in the rock pigeon

    Anna I Vickrey et al.
    Different kinds of molecular changes at one genetic locus control different feather pigmentation patterns, and the darkest patterns resulted from hybridization with another species.
    1. Immunology and Inflammation

    Variations in HLA-B cell surface expression, half-life and extracellular antigen receptivity

    Brogan Yarzabek et al.
    Lymphocytes and monocytes maintain their cell surface HLA-B via different mechanisms, which in turn differently influence cell-surface expression, half-life and peptide receptivity of HLA-B allotypes.
    1. Microbiology and Infectious Disease

    An essential Staphylococcus aureus cell division protein directly regulates FtsZ dynamics

    Prahathees J Eswara et al.
    GpsB in Staphylococcus aureus directly regulates the central cell division protein FtsZ, a different function from that assigned for GpsB in other closely related organisms.
    1. Evolutionary Biology

    Membranes, energetics, and evolution across the prokaryote-eukaryote divide

    Michael Lynch, Georgi K Marinov
    The common view that the mitochondrion endowed eukaryotes with a boost in bioenergetic capacity above that in prokaryotes is inconsistent with a diversity of cellular features.
    1. Evolutionary Biology

    Primary and promiscuous functions coexist during evolutionary innovation through whole protein domain acquisitions

    José Antonio Escudero et al.
    The coexistence of ancestral and innovative functions is possible and fosters evolutionary innovation in events involving the acquisition of whole protein domains.
    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. Cell Biology
    2. Developmental Biology

    Cell-intrinsic and -extrinsic mechanisms promote cell-type-specific cytokinetic diversity

    Tim Davies et al.
    Functional molecular analysis of cytokinesis in Caenorhabditis elegans four-cell embryos reveals cell-type-specific variation in the fundamental dependence on a robust f-actin cytoskeleton for successful cell division, mediated by both cell-intrinsic and -extrinsic pathways.
    1. Computational and Systems Biology
    2. Developmental Biology

    Retinal stem cells modulate proliferative parameters to coordinate post-embryonic morphogenesis in the eye of fish

    Erika Tsingos et al.
    3D niche topology imposes a spatially biased random stem cell loss, which is differentially fine-tuned in neural retina and retinal pigmented epithelium to regulate growth, shape, and cellular topology.
    1. Cell Biology
    2. Developmental Biology

    Physical association between a novel plasma-membrane structure and centrosome orients cell division

    Takefumi Negishi et al.
    A newly discovered membrane structure associates with one of the centrioles and affects two important centrosomal events in epidermal cells – ciliary positioning and spindle orientation – through a physical interaction.

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