73 results found
    1. Evolutionary Biology

    Improved use of a public good selects for the evolution of undifferentiated multicellularity

    John H Koschwanez, Kevin R Foster, Andrew W Murray
    The ability to share resources for the benefit of all members of a group may have driven ancient organisms to evolve from a unicellular to a multicellular state.
    1. Ecology
    2. Physics of Living Systems

    Spatial dilemmas of diffusible public goods

    Benjamin Allen, Jeff Gore, Martin A Nowak
    A simple model reveals the roles of colony geometry and diffusion rate in allowing microbes to cooperate by sharing public goods.
    1. Neuroscience

    Hypothalamic melanin concentrating hormone neurons communicate the nutrient value of sugar

    Ana I Domingos, Aylesse Sordillo ... Jeffrey M Friedman
    Natural sugars are preferred over artificial sweeteners because of their nutritional content, which is sensed by MCH neurons in the lateral hypothalamus.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Salmonella Typhi and Salmonella Paratyphi A elaborate distinct systemic metabolite signatures during enteric fever

    Elin Näsström, Nga Tran Vu Thieu ... Henrik Antti
    Metabolite analysis of plasma from enteric fever patients define signals of organism specific host–pathogen interactions and provides opportunities for new diagnostics.
    1. Biochemistry and Chemical Biology

    B4GAT1 is the priming enzyme for the LARGE-dependent functional glycosylation of α-dystroglycan

    Jeremy L Praissman, David H Live ... Lance Wells
    The correct enzymatic activity of a previously misnamed enzyme is defined, placing the enzyme upstream of LARGE in building functional O-mannose structures on α-dystroglycan that are disrupted in multiple forms of congenital muscular dystrophy.
    1. Biochemistry and Chemical Biology

    The glucuronyltransferase B4GAT1 is required for initiation of LARGE-mediated α-dystroglycan functional glycosylation

    Tobias Willer, Kei-ichiro Inamori ... Kevin P Campbell
    Post-phosphoryl modification of α-dystroglycan requires the glucuronyltransferase B4GAT1; this enzyme synthesizes the acceptor glycan that serves as a primer for the glycosyltransferase LARGE to synthesize the laminin-binding glycan.
    1. Microbiology and Infectious Disease

    Cell cycle constraints on capsulation and bacteriophage susceptibility

    Silvia Ardissone, Coralie Fumeaux ... Patrick H Viollier
    A multi-layered and conserved cell cycle mechanism prevents capsulation, long known as a bacterial virulence determinant, in G1-phase and concurrently licenses bacteriophage-mediated genetic exchange prior to entry into S-phase.
    1. Microbiology and Infectious Disease

    A mutant Escherichia coli that attaches peptidoglycan to lipopolysaccharide and displays cell wall on its surface

    Marcin Grabowicz, Dorothee Andres ... Thomas J Silhavy
    A single mutation in Escherichia coli connects two essential cell envelope assembly pathways and confers vancomycin resistance by displaying molecular decoys at the cell surface.
    1. Computational and Systems Biology
    2. Ecology

    Expanding xylose metabolism in yeast for plant cell wall conversion to biofuels

    Xin Li, Vivian Yaci Yu ... Jamie HD Cate
    Parallel pathways of xylose metabolism identified in fungi that grow on plants can be used in yeast to promote hemicellulose conversion to biofuels.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Fucosylation and protein glycosylation create functional receptors for cholera toxin

    Amberlyn M Wands, Akiko Fujita ... Jennifer J Kohler
    Cholera intoxication of human colonic epithelial cells is dependent on recognition of protein glycosylation and fucosylation, not exclusively on ganglioside recognition as proposed previously.

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