398 results found
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Contributions of mast cells and vasoactive products, leukotrienes and chymase, to dengue virus-induced vascular leakage

    Ashley L St John et al.
    Proteins produced by mast cells modulate the permeability of blood vessels, and may determine whether patients infected with dengue virus develop life-threatening complications.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanisms of opening and closing of the bacterial replicative helicase

    Jillian Chase et al.
    Analysis of the Escherichia coli DnaB helicase•bacteriophage λ helicase loader (λP) complex provides insights into helicase opening, delivery to the origin and ssDNA entry, and closing in preparation for translocation.
    1. Structural Biology and Molecular Biophysics
    2. Developmental Biology

    Drosophila Nanos acts as a molecular clamp that modulates the RNA-binding and repression activities of Pumilio

    Chase A Weidmann et al.
    Crystal structures of Nanos bound to Pumilio and target RNAs demonstrate how Nanos forms a molecular clamp to alter Pumilio RNA regulation and specificity in embryonic development and germline maintenance.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Imaging the fate of histone Cse4 reveals de novo replacement in S phase and subsequent stable residence at centromeres

    Jan Wisniewski et al.
    Internally tagged, functional Cse4/CENP-A/CenH3 histone variant is exclusively centromeric and stable through the budding yeast cell cycle after replacement in S phase.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Novel transgenic pigs with enhanced growth and reduced environmental impact

    Xianwei Zhang et al.
    Transgenic expression of glucanase, xylanase and phytase in pigs enhances growth performance and reduces nitrogen/phosphorus emission, and offers a very valuable biological strategy for sustainable resource utilization and environmental protection in the pork industry.
    1. Developmental Biology
    2. Neuroscience
    Pond snail illustration

    The Natural History of Model Organisms: The unlimited potential of the great pond snail, Lymnaea stagnalis

    István Fodor et al.
    The great pond snail is a multipurpose model organism and a contemporary choice for addressing a wide range of biological questions, problems and phenomena in the laboratory and the field.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Pollution: Transgenic pigs to the rescue

    Björn Petersen
    Genetically engineered pigs that digest their food better could help to reduce phosphorus and nitrogen pollution.
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    1. Chromosomes and Gene Expression
    2. Plant Biology

    The MBD7 complex promotes expression of methylated transgenes without significantly altering their methylation status

    Dongming Li et al.
    The METHYL-CpG-BINDING DOMAIN 7 (MBD7) complex promotes the activation (rather than repression) of transgenes that undergo DNA methylation and it does so without significantly altering their methylation status, placing this complex downstream of DNA methylation.
    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.

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