77 results found
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    The role of interspecies recombination in the evolution of antibiotic-resistant pneumococci

    Joshua C D'Aeth et al.
    Selection by national-level antibiotic consumption and vaccination trends drives atypical recombinations, frequently resulting in interspecies sequence exchange at many sites across a bacterial species’ chromosome.
    1. Microbiology and Infectious Disease

    The alternative sigma factor σX mediates competence shut-off at the cell pole in Streptococcus pneumoniae

    Calum HG Johnston et al.
    Tracking fluorescent fusion proteins in competent pneumococcal cells reveals a polar hub for competence regulation, with the alternative sigma factor σX relocalizing DprA to this hub to mediate competence shut-off.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    An internal thioester in a pathogen surface protein mediates covalent host binding

    Miriam Walden et al.
    Bacterial-encoded covalent adhesion is a new molecular principle in host-microbe interactions and may play a key role in host colonization by a wide range of Gram-positive bacteria.
    1. Microbiology and Infectious Disease

    Unbiased homeologous recombination during pneumococcal transformation allows for multiple chromosomal integration events

    Jun Kurushima et al.
    DNA uptake and recombination in pneumococcus are highly efficient and independent of the cell-cycle or genetic location of the transformed allele, but limited to maximally 50% of the population.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Bacterial autolysins trim cell surface peptidoglycan to prevent detection by the Drosophila innate immune system

    Magda Luciana Atilano et al.
    To avoid recognition by the immune system, bacteria use autolysins to trim fragments of peptidoglycans that are exposed on the bacterial cell wall.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Panproteome-wide analysis of antibody responses to whole cell pneumococcal vaccination

    Joseph J Campo et al.
    Panproteome array analysis of antibody responses to a pneumococcal whole cell vaccine reveals consistent induction of immune responses to multiple surface proteins, despite individuals' unique pre-existing antibody profiles.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    CryoEM structures of membrane pore and prepore complex reveal cytolytic mechanism of Pneumolysin

    Katharina van Pee et al.
    The near-atomic cryoEM pore complex structure of pneumolysin, the main virulence factor of Streptococcus pneumoniae, shows how the individual domains rearrange during the pore formation.
    1. Microbiology and Infectious Disease

    Respiratory tissue-associated commensal bacteria offer therapeutic potential against pneumococcal colonization

    Soner Yildiz et al.
    A respiratory tissue-associated commensal Lactobacillus strain confers colonization resistance to Streptococcus pneumoniae, when applied therapeutically in a post influenza virus super-infection model.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Tuning site-specific dynamics to drive allosteric activation in a pneumococcal zinc uptake regulator

    Daiana A Capdevila et al.
    Internal dynamics play a crucial functional role in MarR (multiple antibiotic resistance repressor) proteins and their role reconciles the distinct allosteric mechanisms proposed previously.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Genome-wide identification of lineage and locus specific variation associated with pneumococcal carriage duration

    John A Lees et al.
    Sequence changes in the pneumococcal genome explain most of the variability in duration of asymptomatic carriage with serotype, antibiotic resistance and prophage accounting for the largest effects.

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