14 results found
    1. Structural Biology and Molecular Biophysics

    Activation of a nucleotide-dependent RCK domain requires binding of a cation cofactor to a conserved site

    Celso M Teixeira-Duarte et al.
    Cations are essential cofactors in the ATP activation mechanism of the KtrAB cation channel and appear to be cofactors of many other nucleotide-dependent RCK domains.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Host-selected mutations converging on a global regulator drive an adaptive leap towards symbiosis in bacteria

    M Sabrina Pankey et al.
    Selective forces imposed by the squid animal host drive rapid adaptation of non-native Vibrio fischeri bacteria through convergent mutations of large effect, unmasking preexisting coordinated regulation of symbiosis.
    1. Microbiology and Infectious Disease

    Quorum sensing control of Type VI secretion factors restricts the proliferation of quorum-sensing mutants

    Charlotte Majerczyk et al.
    Quorum-sensing control of Burkholderia thailandensis toxin and immunity pairs serves to police quorum-sensing mutants and may represent a general strategy whereby cooperators can police mutants.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A general method for determining secondary active transporter substrate stoichiometry

    Gabriel A Fitzgerald et al.
    A method for determining how many ions are required to drive transport in an electrogenic secondary active transporter will help understand the mechanisms of bacterial transporters whose structures have been solved.
    1. Structural Biology and Molecular Biophysics

    Phosphoinositide-mediated oligomerization of a defensin induces cell lysis

    Ivan KH Poon et al.
    A novel innate defense mechanism of cell lysis involves the coordinated oligomerization of a defensin by interaction with the membrane lipid, phosphatidylinositol 4,5-bisphosphate.
    1. Evolutionary Biology

    Whole genome phylogenies reflect the distributions of recombination rates for many bacterial species

    Thomas Sakoparnig et al.
    For many bacterial species, recombination dominates genome evolution and phylogenetic patterns that have so far been assumed to reflect clonal relationships, in fact reflect variation in recombination rates across lineages.
    1. Microbiology and Infectious Disease

    Quorum sensing controls Vibrio cholerae multicellular aggregate formation

    Matthew Jemielita et al.
    A quorum-sensing-controlled program of multicellularity, aggregation, is identified in Vibrio cholerae, which may be important for transitions between the marine niche and the human host.
    1. Microbiology and Infectious Disease

    Cyclic di-GMP differentially tunes a bacterial flagellar motor through a novel class of CheY-like regulators

    Jutta Nesper et al.
    Precise control of the bacterial flagellar motor determines bacterial cell dispersal and bacteria-surface interactions.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Coupling chemosensory array formation and localization

    Alejandra Alvarado et al.
    Formation and cell pole-localization of chemotactic signaling-arrays is a coupled process mediated by ParP, which drives localized array-assembly and regulates the localization-dynamics of its network constituents.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    A model symbiosis reveals a role for sheathed-flagellum rotation in the release of immunogenic lipopolysaccharide

    Caitlin A Brennan et al.
    Both beneficial and pathogenic bacteria can use their sheathed flagella during host colonization as a novel toxin-/signal-delivery mechanism.

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