210 results found
    1. Cell Biology

    A bacterial sulfonolipid triggers multicellular development in the closest living relatives of animals

    Rosanna A Alegado et al.
    The development of colonies of cells in choanoflagellates, water-dwelling organisms that feed on bacteria, is triggered by the presence of very low concentrations of a lipid molecule produced by certain types of bacteria.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    EBI2-mediated bridging channel positioning supports splenic dendritic cell homeostasis and particulate antigen capture

    Tangsheng Yi, Jason G Cyster
    The receptor EBI2 is essential for correctly positioning CD4+ dendritic cells in the spleen so that they can present blood-borne antigens to T cells and thereby provoke an antibody response.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    CAMKII and Calcineurin regulate the lifespan of Caenorhabditis elegans through the FOXO transcription factor DAF-16

    Li Tao et al.
    Longevity in C. elegans is influenced not only by insulin/IGF-1 signalling, but also by CAMKII and calcineurin, acting on the same target, the transcription factor DAF-16.
    1. Microbiology and Infectious Disease

    The human gut and groundwater harbor non-photosynthetic bacteria belonging to a new candidate phylum sibling to Cyanobacteria

    Sara C Di Rienzi et al.
    Melainabacteria, a candidate phylum related to Cyanobacteria, has been identified in gut and sediment samples by genomic analysis.
    1. Developmental Biology

    Developmental lineage priming in Dictyostelium by heterogeneous Ras activation

    Alex Chattwood et al.
    The probability of a cellular response to a differentiation inducing signal is correlated with the dynamic expression of a Ras protein, and produces a ‘salt and pepper’ pattern of cell differentiation.
    1. Microbiology and Infectious Disease

    c-di-GMP heterogeneity is generated by the chemotaxis machinery to regulate flagellar motility

    Bridget R Kulasekara et al.
    Real time measurements of c-di-GMP in individual cells reveal an unexpected mechanism by which the chemotaxis machinery controls c-di-GMP heterogeneity, thereby regulating flagellar-based motility.
    1. Microbiology and Infectious Disease

    Escherichia coli swimming is robust against variations in flagellar number

    Patrick J Mears et al.
    The swimming behavior of E. coli is surprisingly robust against the natural variations in the number of flagella per cell.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Structure of bacterial cytoplasmic chemoreceptor arrays and implications for chemotactic signaling

    Ariane Briegel et al.
    Bacterial cytoplasmic chemoreceptors assemble into a sandwich of two hexagonally packed arrays.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The Ca2+-activated K+ current of human sperm is mediated by Slo3

    Christoph Brenker et al.
    The principal potassium ion channel in human sperm, Slo3, is primarily activated by calcium ions and controls the membrane potential of human sperm by intracellular calcium ion levels rather than intracellular pH.
    1. Stem Cells and Regenerative Medicine

    Selective amputation of the pharynx identifies a FoxA-dependent regeneration program in planaria

    Carolyn E Adler et al.
    A chemical method has been developed for studying single organ regeneration and fate specification of stem cells in an adult organism.

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