1,032 results found
    1. Cell Biology

    Novel origin of lamin-derived cytoplasmic intermediate filaments in tardigrades

    Lars Hering et al.
    A newly discovered cytoplasmic intermediate filament in water bears may help these animals to resist extreme environmental conditions.
    1. Microbiology and Infectious Disease

    Human gut Bacteroides capture vitamin B12 via cell surface-exposed lipoproteins

    Aaron G Wexler et al.
    The human gut bacterial lipoprotein BtuG binds vitamin B12 with femtomolar affinity, can remove vitamin B12 from human intrinsic factor, and is required for commensal fitness in the gut.
    1. Epidemiology and Global Health

    Vitamin A supplements, routine immunization, and the subsequent risk of Plasmodium infection among children under 5 years in sub-Saharan Africa

    Maria-Graciela Hollm-Delgado et al.
    An analysis of national survey data shows that vitamin A might protect against malaria infection, an effect potentially modified by seasonality, and that no routine vaccinations were linked to parasitemia, though BCG vaccination was associated with PfHRP-2 antigenemia.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Functional and structural characterization of an ECF-type ABC transporter for vitamin B12

    Joana A Santos et al.
    ECF-CbrT is a bacterial vitamin B12 transporter that is structurally different from the well-characterized transporter BtuCDF, yet has similar functional properties.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The role of Cdc42 and Gic1 in the regulation of septin filament formation and dissociation

    Yashar Sadian et al.
    Imaging with electron microscopy and cryo-electron tomography reveals that competition between Cdc42 and Gic1 for the same subunit within septins controls the formation and breakdown of septin filaments.
    1. Evolutionary Biology
    2. Plant Biology

    Evolution of alternative biosynthetic pathways for vitamin C following plastid acquisition in photosynthetic eukaryotes

    Glen Wheeler et al.
    Genomic evidence suggests that L-gulonolactone oxidase-the terminal enzyme in vitamin C synthesis, which has been repeatedly lost throughout animal evolution-was lost in plants and other photosynthetic eukaryotes following plastid acquisition.
    1. Cell Biology
    2. Neuroscience

    Filamin, a synaptic organizer in Drosophila, determines glutamate receptor composition and membrane growth

    GaYoung Lee, Thomas L Schwarz
    Filamin, by recruiting a signaling complex to the postsynapse, orchestrates the correct formation and growth of postsynaptic membranes and localization of glutamate receptor subunits.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The Lamin B receptor is essential for cholesterol synthesis and perturbed by disease-causing mutations

    Pei-Ling Tsai et al.
    Lamin B receptor may provide a long-sought model system enabling unprecedented studies of protein quality control in the nuclear envelope of mammalian cells.
    1. Cell Biology
    2. Developmental Biology

    The Drosophila formin Fhos is a primary mediator of sarcomeric thin-filament array assembly

    Arkadi Shwartz et al.
    Actin is incorporated into the thin-filament arrays of skeletal muscle sarcomeres in discrete steps, and Fhos, the Drosophila homolog of FHOD-family formins, is an essential player in the process.
    1. Physics of Living Systems
    2. Cell Biology

    Side-binding proteins modulate actin filament dynamics

    Alvaro H Crevenna et al.
    The kinetics of actin polymerization are strongly influenced by the binding of proteins to the lateral filament surface.

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