64 results found
    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. 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. 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. 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. 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. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Epidemiology: Promiscuous bacteria have staying power

    Ruth C Massey, Daniel J Wilson
    Being able to take up DNA from their environment might allow pneumococcal bacteria to colonize the human nose and throat for longer periods of time.
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    1. Microbiology and Infectious Disease

    Two-component Signaling Pathways: A bacterial Goldilocks mechanism

    Irene M Kim, Hendrik Szurmant
    Bacillus subtilis can measure the activity of the enzymes that remodel the cell wall to ensure that the levels of activity are ‘just right’.
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